Recent Activity
All
450exc115 Added a reply to 83 YZ250 Bar Risors
5/21/2026 6:29am The 490s had rubber mounted handlebar setups. I always swapped the 490 top clamps over to my 250s that ran 43mm forks.
More »
450exc115 Added a reply to 83 YZ250 Bar Risors
4/29/2026 11:40am Get FMX bars or vintage bend bars. They have a much taller rise than current bends. ProTaper has a chart.
450exc115 Added a reply to ‘99 YZ400F Rebuild
4/9/2026 5:10am Definitely an applied clamp, I had them on my 98 YZ250. Looks like an AC alum subframe. Stock were blue painted steel till 00 and then the newer factory alum ones were made of square stock. What's crazy is that Yamaha sold a Titanium one through their GTY catalog for $150 back in the day. I wish I had picked...
450exc115 Added a reply to ‘99 YZ400F Rebuild
3/23/2026 5:48am Instead of a hammer and punch use an air chisel with a blunt ended attachment after heat and penetrant.
450exc115 Added a reply to In search of ‘95-‘97 CR125 parts
3/6/2026 9:12am The mid 90s 46mm KYB forks were decent for there time, most folks liked them over the Showa TCs that were on the 250 at the time. I agree the 47mm showa TCs that came on the CRFs are a way better setup for that bike. I had some on my 91 CR250 along with a modded shock from a...
450exc115 Added a reply to Red Rocket experts...1980 CR250R Swingarm to 1978 Cr250R. Does it bolt up?
2/5/2026 4:36pm Same. Even the 81-83 arms bolt on, those are mono shocks though. I have plans to modify an 81 to be a twin shock setup if I ever get around to building my 80 250CR. It's only been 10+ years. lol
450exc115 Added a reply to YZ250 Forks
1/16/2026 7:01am Stem is the same from 05-present. Forks are the same diameters from 05-present on the two strokes. 05 have different internals than the 06+ The YZFs got the smaller diameter upper fork tubes. 2005+ YZ250/YZ125/YZ250X/YZ125X : Upper 56mm 2010+ YZ450F: Upper 54mm 2013+ YZ250F: Upper 54mm
450exc115 Added a reply to 1979 YZ 250 shock ID
12/16/2025 12:10pm Stock that someone modified to have a Schrader instead of the normal rubber bleeder that you need a needle for. I've modded these and used a Racetech or KYB 46mm valve piston and shim stack along with remote reservoir. You can use just about any modern 46/14mm seal head in them too.
450exc115 Added a reply to 06 YZ450F RESTO
12/9/2025 11:40am Nice! I didn't think RG3 made clamps for the bigger KYBs AOSS/SSS forks. Or at least I don't see them come up on Evil-bay, only for the older forks.
450exc115 Added a reply to 18" rear wheels for MX?
12/9/2025 5:46am You'll be fine. They went to a 19" as it has less roll over in the corners for side loading. Not sure us mere mortals can tell the difference. The 18" extra sidewall gives better flex and traction for woods riding. At 50+ (A-woods, B-moto) I don't notice the difference and just like the feel of the 18" over the...
450exc115 Added a reply to Vintage Yamaha Pegs
10/3/2025 5:51am Bolt up no. But I've made many of YZ or KTM pegs fit the older bikes. I think I had MSR KTM pegs from the 00s on my old YZ465. Usually you just need to grind the a little so that they fit between the frame tabs.
450exc115 Added a reply to Vintage shock options
10/2/2025 10:13am I always scuff up the brake liner with a course porting tool (sand paper on a mandrel in a drill) prior to installing new pads. If old pads get glazed you can refresh them with course sand paper. If neither of those work you may need to arc the pads. I tape sand paper to the liner and then spin...
450exc115 Added a reply to Gary Emig Silencer
9/30/2025 11:53am Jeff Emig dad has made parts over the years and I believe the shop is still making things.
450exc115 Added a reply to My 2002 Honda CR125R Build — A Special Piece of History
9/24/2025 1:04pm The carb wing will help a 125 with low end. Most 125 towards the end ran 38mm carbs (same as a 250) to give them that sweet top end over rev. It was at the cost of low end as the velocity through the carb was pretty slow and made them run larger pilot jets leading to poor throttle response...
450exc115 Added a reply to My 2002 Honda CR125R Build — A Special Piece of History
9/24/2025 7:40am It's always fun owning a bike with a story behind it. Carb mod is a version of the Yamaha boost bottle for sure. FYI Lectron carbs have been around since the late 70s with continued improvements to the system for years. Lots of neat mods to the bike and he definitely liked spending money. It would be interesting to see...
450exc115 Added a comment about video Are Shootouts still relevant? What can we do to fix them? | Vital MX Testing and Tech Show
9/12/2025 10:11am
Shootouts are still relevant, the key is to use the same markers to quantify the bikes. Stock for the most part but setup for each rider. Switching tires and grips to suit a track or rider is good thing along with what suspension setup works for which rider at which level. Multiple skill levels and several tracks would be beneficial to get a sample of which bike might be better suited for certain people. Short, tall, fast, slow is all relevant. While all bikes are great they are definitely different between the brands. I'm available if you need a rider...
This video has 15 comments.
450exc115 Added a reply to Yamaha YZ250 99+ and YZ250X 16+ Aftermarket heads
8/21/2025 11:31am APEX has been sold but still have the RK-Tech
450exc115 Started a new thread Yamaha YZ250 99+ and YZ250X 16+ Aftermarket heads
8/21/2025 11:31am Went HITLIS and it works better with a stock head shape. RK Tech Head similar dome to a XC APEX Head with XC dome. (SOLD) Both low miles and worked great just don't need anymore. $200 each located in CT and will ship.
This forum thread has 8 replies.
450exc115 Added a comment about news story Chase Sexton | Out Until SMX Playoffs
8/13/2025 12:35pm
I'm sure the front locking up was from the crash not the original issue that caused the crash.
This news story has 3 comments.
450exc115 Added a reply to Yamaha YZ250 99+ and YZ250X 16+ Aftermarket heads
8/7/2025 8:33am Bump to the top of the list. Still have them