Full Tilt CR250 Build - MXA Two Stroke Hall of Fame

Phillip_Lamb
Profile picture for user Phillip_Lamb
Posts
2074
Joined
12/14/2010
Location
ORANGEVALE, CA, USA
Phillip_Lamb 6/17/2016 8:30pm
6/17/2016 8:30pm
chump6784 wrote:
So they said that it passed 450's up the hills due to the lower weight and engine work but that it is below the AMA weight...
So they said that it passed 450's up the hills due to the lower weight and engine work but that it is below the AMA weight limit.

My question, could it still outrun 450's if it was at the weight limit and if so, what is stopping someone lining up in a pro race on a heavily modded 250 2 stroke? Is the cost not worth it because the 450's don't cost as much to run as the 250f's or is there something else.

Either way, awesome bike and build. I really like how clean it is, kinda like the factory bikes from back then. Not logo's and lines going everywhere like today's bikes, just nice and clean
1. The bike outrunning a 450 larger would have to do with the riders ability. Ricky Carmichael won the 2003 Outdoors on a Cr250 while KDUB was on a 450. For someone to show up on a bike with this much invested would mean either he is rich or rides for a factory team. the most likely person to show up on a 250 would be a privateer in which case the $$$$thousands he could through at saving weight would be better spend paying for entries and getting to the races.

2 over the past few years there have been a handful of guys who have shown up on one to qualify. in 2012 Chris Blose showed up to hangtown on a yz250 but he failed to qualify. in 2014 someone at Muddy Creek someone qualified on a KTM but he crashed on a downed Trey Canard.

typically in the 450 class its not as cost effective as 450s don't have an issue with needing more power. Typically people are trying to make manageable power because when you start getting up near 55-60 the bike gets harder to control. in fact its rumored RC's RMZ 450 was putting out around 55 because he could ride it harder than if it had more. Think like riding a 125 vs a 250. a 125 can be ham fisted and thrown around like a rag whereas a 250 needs some respect
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 6/17/2016 11:13pm
6/17/2016 11:13pm
Phillip_Lamb wrote:
1. The bike outrunning a 450 larger would have to do with the riders ability. Ricky Carmichael won the 2003 Outdoors on a Cr250 while KDUB...
1. The bike outrunning a 450 larger would have to do with the riders ability. Ricky Carmichael won the 2003 Outdoors on a Cr250 while KDUB was on a 450. For someone to show up on a bike with this much invested would mean either he is rich or rides for a factory team. the most likely person to show up on a 250 would be a privateer in which case the $$$$thousands he could through at saving weight would be better spend paying for entries and getting to the races.

2 over the past few years there have been a handful of guys who have shown up on one to qualify. in 2012 Chris Blose showed up to hangtown on a yz250 but he failed to qualify. in 2014 someone at Muddy Creek someone qualified on a KTM but he crashed on a downed Trey Canard.

typically in the 450 class its not as cost effective as 450s don't have an issue with needing more power. Typically people are trying to make manageable power because when you start getting up near 55-60 the bike gets harder to control. in fact its rumored RC's RMZ 450 was putting out around 55 because he could ride it harder than if it had more. Think like riding a 125 vs a 250. a 125 can be ham fisted and thrown around like a rag whereas a 250 needs some respect
I am not going to mention names in fear of being ripped to shreds by the Vital fooper militia but I witnessed a few drag races up the hill at Glen Helen on the Thursday we tested with MXA that left me completely shocked (but pleasantly surprised)

I am not going to get into the specifics but lets just say there may or may not have been several high profile 450 riders that may or may not have gotten their feelings hurt on Mt Saint Helens. I will leave it at that.

1
emifrancy 6/19/2016 2:11pm
6/19/2016 2:11pm Edited Date/Time 6/19/2016 3:12pm
Hi Blackdiamond,
please, do you know a LECTRON Carb? Have you any experience with this? I'm confused, because I want to try with LECTRON but it haven't a TPS connection, And probably the performance will be little bit lower...

Thank you in advanceHi Blackdiamond,
please, do you non a LECTRON Carb? Have you anche esperience which this? I'm confused, because I want to try with LECTRON but it haven't a TPS connection, And probably the performance will be little bit lower...

Thank you in advance
Langhammx 6/19/2016 7:22pm
6/19/2016 7:22pm
blackdiamond wrote:
I am finally getting around to the final assembly of this project after a lot of research, collecting parts and a fair amount of machine work...
I am finally getting around to the final assembly of this project after a lot of research, collecting parts and a fair amount of machine work and mods. The last generation of Honda two strokes are my favorite bikes of all time so I decided to pull out all the stops and build the best CR I could with the latest tech and trick parts available (within reason)

I really wanted to think outside of the box and make mods to the bike that make it a better machine, not just bolt on a bunch of bling that does nothing to make the bike better. I did have a few pet peeves with the CR250 that I could fix and I wanted to address them as well.

Originally I just had a few simple requirements on my wish list:

1. Lots of horsepower
2. As lightweight as possible
3. No air forks
4. Reliable

Then my OCD took over and I ended up with quite a bit more of an exotic build than I had originally planned but I think it's turning out great so far. I will post more updates, details and pics over the next few weeks.

Frame prepped and ready for final assembly.



All of the brackets have been removed from left frame spar and all of the electrical components will be relocated towards the center of the bike and in the airbox.



I removed the coil brackets from the down tube of the frame and moved it near the rear shock tower. Anyone that has done a top-end on a 2002-2007 CR will know why. The location of the coil is a total pain in the ass when pulling the cylinder and this mod makes it much easier. The bonus is that the weight is moved to the center of the bike and that is never a bad thing.





I added a return spring to the rear master cylinder eliminating the need for the tab on the frame or the OEM spring. Added a billet brake clevis and Ti hardware to finish it up.





Because the ignition box will be relocated to the center of the bike I was able to utilize the old mount on the head tube to fabricate a mount for a Honda HPSD steering damper.



He's not running an Electron carb on his bike.

However, I have one on my RM250 and the bike runs great. Super crisp and it is really smooth power.

The Shop

See All »
Kx125rider 6/19/2016 7:42pm
6/19/2016 7:42pm
blackdiamond wrote:
I am not going to mention names in fear of being ripped to shreds by the Vital fooper militia but I witnessed a few drag races...
I am not going to mention names in fear of being ripped to shreds by the Vital fooper militia but I witnessed a few drag races up the hill at Glen Helen on the Thursday we tested with MXA that left me completely shocked (but pleasantly surprised)

I am not going to get into the specifics but lets just say there may or may not have been several high profile 450 riders that may or may not have gotten their feelings hurt on Mt Saint Helens. I will leave it at that.

Haha thats freakin awesome
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 6/20/2016 4:15pm
6/20/2016 4:15pm
blackdiamond wrote:
I am finally getting around to the final assembly of this project after a lot of research, collecting parts and a fair amount of machine work...
I am finally getting around to the final assembly of this project after a lot of research, collecting parts and a fair amount of machine work and mods. The last generation of Honda two strokes are my favorite bikes of all time so I decided to pull out all the stops and build the best CR I could with the latest tech and trick parts available (within reason)

I really wanted to think outside of the box and make mods to the bike that make it a better machine, not just bolt on a bunch of bling that does nothing to make the bike better. I did have a few pet peeves with the CR250 that I could fix and I wanted to address them as well.

Originally I just had a few simple requirements on my wish list:

1. Lots of horsepower
2. As lightweight as possible
3. No air forks
4. Reliable

Then my OCD took over and I ended up with quite a bit more of an exotic build than I had originally planned but I think it's turning out great so far. I will post more updates, details and pics over the next few weeks.

Frame prepped and ready for final assembly.



All of the brackets have been removed from left frame spar and all of the electrical components will be relocated towards the center of the bike and in the airbox.



I removed the coil brackets from the down tube of the frame and moved it near the rear shock tower. Anyone that has done a top-end on a 2002-2007 CR will know why. The location of the coil is a total pain in the ass when pulling the cylinder and this mod makes it much easier. The bonus is that the weight is moved to the center of the bike and that is never a bad thing.





I added a return spring to the rear master cylinder eliminating the need for the tab on the frame or the OEM spring. Added a billet brake clevis and Ti hardware to finish it up.





Because the ignition box will be relocated to the center of the bike I was able to utilize the old mount on the head tube to fabricate a mount for a Honda HPSD steering damper.



Langhammx wrote:
He's not running an Electron carb on his bike. However, I have one on my RM250 and the bike runs great. Super crisp and it is...
He's not running an Electron carb on his bike.

However, I have one on my RM250 and the bike runs great. Super crisp and it is really smooth power.
I'm not a fan of the Lectron carbs. The carb on this machine is a modified OEM Keihin from a 2006 Suzuki RM250.
holeshot413
Profile picture for user holeshot413
Posts
685
Joined
2/24/2008
Location
Prosperity, SC, USA
holeshot413 6/20/2016 8:49pm
6/20/2016 8:49pm
Phillip_Lamb wrote:
1. The bike outrunning a 450 larger would have to do with the riders ability. Ricky Carmichael won the 2003 Outdoors on a Cr250 while KDUB...
1. The bike outrunning a 450 larger would have to do with the riders ability. Ricky Carmichael won the 2003 Outdoors on a Cr250 while KDUB was on a 450. For someone to show up on a bike with this much invested would mean either he is rich or rides for a factory team. the most likely person to show up on a 250 would be a privateer in which case the $$$$thousands he could through at saving weight would be better spend paying for entries and getting to the races.

2 over the past few years there have been a handful of guys who have shown up on one to qualify. in 2012 Chris Blose showed up to hangtown on a yz250 but he failed to qualify. in 2014 someone at Muddy Creek someone qualified on a KTM but he crashed on a downed Trey Canard.

typically in the 450 class its not as cost effective as 450s don't have an issue with needing more power. Typically people are trying to make manageable power because when you start getting up near 55-60 the bike gets harder to control. in fact its rumored RC's RMZ 450 was putting out around 55 because he could ride it harder than if it had more. Think like riding a 125 vs a 250. a 125 can be ham fisted and thrown around like a rag whereas a 250 needs some respect
blackdiamond wrote:
I am not going to mention names in fear of being ripped to shreds by the Vital fooper militia but I witnessed a few drag races...
I am not going to mention names in fear of being ripped to shreds by the Vital fooper militia but I witnessed a few drag races up the hill at Glen Helen on the Thursday we tested with MXA that left me completely shocked (but pleasantly surprised)

I am not going to get into the specifics but lets just say there may or may not have been several high profile 450 riders that may or may not have gotten their feelings hurt on Mt Saint Helens. I will leave it at that.

Please throw up the video
H4L
Profile picture for user H4L
Posts
2595
Joined
3/18/2016
Location
USA
H4L 6/20/2016 10:09pm
6/20/2016 10:09pm
Phillip_Lamb wrote:
1. The bike outrunning a 450 larger would have to do with the riders ability. Ricky Carmichael won the 2003 Outdoors on a Cr250 while KDUB...
1. The bike outrunning a 450 larger would have to do with the riders ability. Ricky Carmichael won the 2003 Outdoors on a Cr250 while KDUB was on a 450. For someone to show up on a bike with this much invested would mean either he is rich or rides for a factory team. the most likely person to show up on a 250 would be a privateer in which case the $$$$thousands he could through at saving weight would be better spend paying for entries and getting to the races.

2 over the past few years there have been a handful of guys who have shown up on one to qualify. in 2012 Chris Blose showed up to hangtown on a yz250 but he failed to qualify. in 2014 someone at Muddy Creek someone qualified on a KTM but he crashed on a downed Trey Canard.

typically in the 450 class its not as cost effective as 450s don't have an issue with needing more power. Typically people are trying to make manageable power because when you start getting up near 55-60 the bike gets harder to control. in fact its rumored RC's RMZ 450 was putting out around 55 because he could ride it harder than if it had more. Think like riding a 125 vs a 250. a 125 can be ham fisted and thrown around like a rag whereas a 250 needs some respect
I remember reading an mx article about RC's Factory 02-03 CR250r's were putting out between 58-60 hp atrw. I was at the AMA Hangtown national those years & remember RC's bikes sounding insane wide open.

I also remember MC riding an 06 CR250r model at one of the Anaheim races that yr. & holeshoted against the factory 450's & other 250 2 strokes. He finished in 4th place that night & only RC (RMZ450), JS (KX450) & CR (YZF450) beat him in the main. Those 3 riders made the podium that evening & MC missed it by one spot.
I believe MC's 06 motor was done by PC (Mitch Payton) since Honda was no longer doing any R&D after the 05 season on the CR250. I think Fonseca was the last Honda rider on a Factory CR250r in 2005 if not mistaken.
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 6/20/2016 10:50pm
6/20/2016 10:50pm
holeshot413 wrote:
Please throw up the video
Please throw up the video
All of the videos I have on this machine are on here but I do have some fresh material from testing carb and ignition settings this morning at Pala with Ryan Surratt. He is going to run my ignition and carb setup at Mammoth for the two stroke race. Check it out.

Surratt #151 testing at Pala
cslacker
Profile picture for user cslacker
Posts
379
Joined
6/6/2014
Location
Glendale, AZ, USA
cslacker 6/21/2016 8:32am
6/21/2016 8:32am
blackdiamond wrote:
What carb are you going to run?
I have a PWK from a 2000 cr250 that I have in it right now. I also have a Lectron sitting in a box that I could never get to run right with the old Eric Gorr 265 build I had.

I ran it this past weekend with the PWK up on the Mogollon Rim in AZ because of the heat in the valley. Man my jetting was rich! It wouldn't even take half throttle. That was with a 42 pilot, NEDW needle in 3rd clip and 172 main. I ended up dropping the needle to 2nd clip and going with a 168 main and it ran amazing! It was a bit weak on the bottom end but I really didn't do much fine tuning and the 7500' elevation with low 90's temps sure didn't help. I am also running 13 48 gearing since my 265 build was basically all bottom end and wouldn't rev.

With the weather sitting around 115 in the valley I am not sure when I am going to get some real playtime with this thing to get it dialed. I will say the powerband on it was super smooth and revved way higher than my 265 build.
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 6/21/2016 10:18pm
6/21/2016 10:18pm
I am running a 48 pilot, JD red needle in the 4th clip and a 170 main in the short body PWK.
cslacker
Profile picture for user cslacker
Posts
379
Joined
6/6/2014
Location
Glendale, AZ, USA
cslacker 6/22/2016 8:10am
6/22/2016 8:10am
blackdiamond wrote:
I am running a 48 pilot, JD red needle in the 4th clip and a 170 main in the short body PWK.
That seems like a crazy rich needle position to me. Are you running the power jet on the carb? I have the JD red, blue and special desert needle at home to play with and with how easy the screwtop pwk is to mess with I will probably try them all. I love having a good bottom end and I am guessing that being over a mile high last weekend really killed my bottom end pull. Also the NEDW suzuki needle isn't the strongest off the bottom.

Thanks for your input!
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 6/22/2016 11:03pm
6/22/2016 11:03pm
blackdiamond wrote:
I am running a 48 pilot, JD red needle in the 4th clip and a 170 main in the short body PWK.
cslacker wrote:
That seems like a crazy rich needle position to me. Are you running the power jet on the carb? I have the JD red, blue and...
That seems like a crazy rich needle position to me. Are you running the power jet on the carb? I have the JD red, blue and special desert needle at home to play with and with how easy the screwtop pwk is to mess with I will probably try them all. I love having a good bottom end and I am guessing that being over a mile high last weekend really killed my bottom end pull. Also the NEDW suzuki needle isn't the strongest off the bottom.

Thanks for your input!
I ran the same jetting in my RM250, it works killer. The 2006 CR we tested the ignition/carb setup on Monday actually needed a richer slide and we ended up with a 7.0 slide vs the 7.5 I was running in the 2003.
cslacker
Profile picture for user cslacker
Posts
379
Joined
6/6/2014
Location
Glendale, AZ, USA
cslacker 6/29/2016 2:39pm
6/29/2016 2:39pm
blackdiamond wrote:
I ran the same jetting in my RM250, it works killer. The 2006 CR we tested the ignition/carb setup on Monday actually needed a richer slide...
I ran the same jetting in my RM250, it works killer. The 2006 CR we tested the ignition/carb setup on Monday actually needed a richer slide and we ended up with a 7.0 slide vs the 7.5 I was running in the 2003.
Sorry, been off for a while. When you say 4th clip are you saying 4th from the top? As in 2nd richest clip setting? The reason I ask is my bike won't run clean at 1/3rd throttle in the 3rd clip. 2nd leanest clip setting has worked well for me with the JD red needle. I have heard some people count clip setting opposite of what I am used to is why I ask.
New to -4S-Joe 6/29/2016 6:17pm
6/29/2016 6:17pm
Blackdiamond I just got the new MXA they said you used a Boyesen Rad valve, but pictures show Moto Tassinari V-Force. You used the V-Force right? Did you ever just try the standard Mikuni carb? Wondering how it would perform?
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 6/29/2016 9:32pm
6/29/2016 9:32pm
cslacker wrote:
Sorry, been off for a while. When you say 4th clip are you saying 4th from the top? As in 2nd richest clip setting? The reason...
Sorry, been off for a while. When you say 4th clip are you saying 4th from the top? As in 2nd richest clip setting? The reason I ask is my bike won't run clean at 1/3rd throttle in the 3rd clip. 2nd leanest clip setting has worked well for me with the JD red needle. I have heard some people count clip setting opposite of what I am used to is why I ask.
4th from the top, it's thirsty Smile
TX_187
Profile picture for user TX_187
Posts
381
Joined
6/17/2010
Location
Deer Park, TX, USA
TX_187 6/29/2016 9:51pm
6/29/2016 9:51pm
Any footage of Surratt ripping that thing at Mamoth?
kiwifan
Profile picture for user kiwifan
Posts
9777
Joined
10/31/2009
Location
USA
kiwifan 6/29/2016 10:35pm
6/29/2016 10:35pm
TX_187 wrote:
Any footage of Surratt ripping that thing at Mamoth?
yes, see the KX500 vs CR250 video posted by GD2

Pit Row

See All »
tempura
Profile picture for user tempura
Posts
2076
Joined
5/18/2015
Location
JP
tempura 6/29/2016 10:41pm
6/29/2016 10:41pm
kiwifan wrote:
yes, see the KX500 vs CR250 video posted by GD2
yes, see the KX500 vs CR250 video posted by GD2
Geez that bike is a rippa! Awesome!
Sounds awesome as well
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 6/30/2016 12:41am
6/30/2016 12:41am
blackdiamond wrote:
I am finally getting around to the final assembly of this project after a lot of research, collecting parts and a fair amount of machine work...
I am finally getting around to the final assembly of this project after a lot of research, collecting parts and a fair amount of machine work and mods. The last generation of Honda two strokes are my favorite bikes of all time so I decided to pull out all the stops and build the best CR I could with the latest tech and trick parts available (within reason)

I really wanted to think outside of the box and make mods to the bike that make it a better machine, not just bolt on a bunch of bling that does nothing to make the bike better. I did have a few pet peeves with the CR250 that I could fix and I wanted to address them as well.

Originally I just had a few simple requirements on my wish list:

1. Lots of horsepower
2. As lightweight as possible
3. No air forks
4. Reliable

Then my OCD took over and I ended up with quite a bit more of an exotic build than I had originally planned but I think it's turning out great so far. I will post more updates, details and pics over the next few weeks.

Frame prepped and ready for final assembly.



All of the brackets have been removed from left frame spar and all of the electrical components will be relocated towards the center of the bike and in the airbox.



I removed the coil brackets from the down tube of the frame and moved it near the rear shock tower. Anyone that has done a top-end on a 2002-2007 CR will know why. The location of the coil is a total pain in the ass when pulling the cylinder and this mod makes it much easier. The bonus is that the weight is moved to the center of the bike and that is never a bad thing.





I added a return spring to the rear master cylinder eliminating the need for the tab on the frame or the OEM spring. Added a billet brake clevis and Ti hardware to finish it up.





Because the ignition box will be relocated to the center of the bike I was able to utilize the old mount on the head tube to fabricate a mount for a Honda HPSD steering damper.



I'm still messing around with trying a few different things with reed cages, carbs and ignition settings but I can tell you that the Mikuni is known to make slightly more peak horsepower, however it is known to be more difficult to jet consistently and the rideability suffers a bit as well.
cslacker
Profile picture for user cslacker
Posts
379
Joined
6/6/2014
Location
Glendale, AZ, USA
cslacker 6/30/2016 10:17am
6/30/2016 10:17am
blackdiamond wrote:
4th from the top, it's thirsty Smile
I just noticed you are running a 7.5 slide which would make sense why our pilots and needle positions are different yet main jet is basically the same. I am running a 7.0 slide in my screw top pwk which will probably change some air flow at low throttle positions. I have been considering an 8 slide just to mess around with. I am going to be doing some testing finally this weekend since it will be below 100 here.

btw, bike sounded great in the Mammoth video!
Frodad78
Profile picture for user Frodad78
Posts
2155
Joined
1/11/2012
Location
USA
Frodad78 6/30/2016 10:30am
6/30/2016 10:30am
I just got my the latest issue of MXA with this build in it. Man what piece of work! MXA is really tugging at my heart strings lately, they are banging the two stroke drum like crazy and I'm loving it.
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 6/30/2016 12:39pm
6/30/2016 12:39pm
cslacker wrote:
I just noticed you are running a 7.5 slide which would make sense why our pilots and needle positions are different yet main jet is basically...
I just noticed you are running a 7.5 slide which would make sense why our pilots and needle positions are different yet main jet is basically the same. I am running a 7.0 slide in my screw top pwk which will probably change some air flow at low throttle positions. I have been considering an 8 slide just to mess around with. I am going to be doing some testing finally this weekend since it will be below 100 here.

btw, bike sounded great in the Mammoth video!
Depending on the fuel, sometimes it requires a 7.0
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 7/1/2016 2:08am
7/1/2016 2:08am Edited Date/Time 7/1/2016 11:20am
The OEM slides that have a notch on the bottom seem to work a bit better as well.
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 7/1/2016 2:23am
7/1/2016 2:23am
TX_187 wrote:
Any footage of Surratt ripping that thing at Mamoth?
sende
Profile picture for user sende
Posts
2393
Joined
1/15/2013
Location
FI
sende 7/1/2016 2:41am
7/1/2016 2:41am
This is one of the best threads ever. Hall of fame material.
Katoomey
Profile picture for user Katoomey
Posts
1714
Joined
1/18/2013
Location
USA
Katoomey 7/1/2016 11:03am
7/1/2016 11:03am
Lovely!
blackdiamond
Profile picture for user blackdiamond
Posts
1363
Joined
11/5/2015
Location
Grapevine, TX, USA
blackdiamond 7/2/2016 12:58am
7/2/2016 12:58am Edited Date/Time 7/2/2016 1:41pm
.
kiwifan
Profile picture for user kiwifan
Posts
9777
Joined
10/31/2009
Location
USA
kiwifan 7/2/2016 1:01am
7/2/2016 1:01am
TX_187 wrote:
Any footage of Surratt ripping that thing at Mamoth?
blackdiamond wrote:
Was Ryan on your bike or his BD? I thought he was on his own one using your carb and ignition?
rostocker
Profile picture for user rostocker
Posts
138
Joined
1/21/2011
Location
N/A, VA
rostocker 7/2/2016 3:47am
7/2/2016 3:47am
BD, What aftermarket silencer would you recommend for the HGS exhaust? Seems like you know your things Wink
(I run Vforce or Boyesen (I haven't decided whats best for me) HGS pipe, VHM head with "standard insert" if it matters)

/Rostocker

Post a reply to: Full Tilt CR250 Build - MXA Two Stroke Hall of Fame