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151
Joined
5/12/2017
Location
Fruitland, ID
US
Edited Date/Time
9/8/2018 10:06am
I'm a 43 year old Vet Intermediate rider. Was riding a 16.5 450 Factory Edition. Spent about two hours on my son's 17 SX125 and realized I needed a SX150. The small two strokes are so much fun!!
Anyway, my 450 is on Craigslist and I will be buying a 19 SX150 as soon as they are available. Performance-wise I will be installing immediately:
-Cone Valve AER forks - Had them on the 450, will move the 150
-Bladder conversion on shock by Billy at Powerband
-Lectron carb - have this on my son's 125, jetting is spot on
-VForce 4R reeds
-Michelin Starcross 5 tires - currently running Dunlop MX3S, I believe the Starcross 5's are lighter
The question is, if you had $1,000 to spend on making the SX150 lighter, what are the mods you would purchase?? This is not a money-is-no-object build, but a bang-for-the-buck build.
Anyway, my 450 is on Craigslist and I will be buying a 19 SX150 as soon as they are available. Performance-wise I will be installing immediately:
-Cone Valve AER forks - Had them on the 450, will move the 150
-Bladder conversion on shock by Billy at Powerband
-Lectron carb - have this on my son's 125, jetting is spot on
-VForce 4R reeds
-Michelin Starcross 5 tires - currently running Dunlop MX3S, I believe the Starcross 5's are lighter
The question is, if you had $1,000 to spend on making the SX150 lighter, what are the mods you would purchase?? This is not a money-is-no-object build, but a bang-for-the-buck build.
As for lightness - doing a light build is on my bucket list. I would say one of the best ways is to go for one of those superlight seat foams (I would personally make my own). Beyond that, I'm not sure what would be considered best bang for the buck when it comes to decently priced weight loss.
The Shop
"Money is no object"
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Probably swapping the big pivots bolts/axles to Titanium
Carbon or titanium silencer
Guts 200gram for 200 bucks..
get a gripper seatcover and drill the seat base
Fatbike innertubes (unsprung/rotational)
And still 750 bucks left
For 750 you"ll get a titanium rear spring. Dont december the Weight difference on mine tough.
Rocky Mountain retails a bunch of TI stuff like foot pegs and bolts.
Eliminate the plastic gram guards can save you weight. Probably next to nothing tho. You could also delete the ecu mount and zip tie it... not smrt but reduces weight
Rocky Mountain retails a bunch of TI stuff like foot pegs and bolts.
Eliminate the plastic frame guards can save you weight. Probably next to nothing tho. You could also delete the ecu mount and zip tie it... not smrt but reduces weight
Carbon silencer from Bud racing is really sick.
Cut out all the extra plastic in the air box area.
Run 3/4 take of gas if you do less than 10 laps per moto
Ti footpegs.
You can easy do all that for $1k.
Pit Row
Ti shock spring.
And someone mentioned mountain bike tubes
Front pipe : Pro circuit lighter than stock
Silencer : Bud carbon , but currently use pc titanium at 880grams
TMD Chainguide
Chain: the type thats drilled
Seat foam : Think!
Forks:Used PSF1 , but switched to Ohlins. ( lighter than the 2011 CC Forks)
Shock:Use Ohlins rear shock it was alot lighter than the stock
Tires Pirelli mx3s or what they are called
Michelin or Pirelli mid-softs
Motion Pro rim tape and Lite-Loc’s
Talon sprockets, Sunstar MXR1 chain
PC pipe/carbon silencer
GUTS seat
Ti rear spring ($$$)
Aluminum fasteners wherever you can get away with it
Carbon fiber chain guide
Remove extra material where possible like skid plate, frame guards, caliper guard, airbox material, and don’t add weight back on with heavy graphics kits etc. You can get preprinted backgrounds from some venders on a thinner vinyl than normal.
After this stuff it starts to get pretty expensive for the amount of weight you’re going to shave.
The guys who say take a dump, work out, go on a diet, blah blah blah just don’t get it. It is possible to do all of that stuff and want your bike to be as light on possible at the same time.
I wonder why no one runs a TI chain. The chain is a few pounds I bet you could cut weight with TI it's unsprung and rotating mass. You may even feel a difference.
I know you can feel those gimmick o ring chains drag you down. Its stupid that you buy an o ring chain then you always loose a tooth on your front sprocket first no matter what chain or rear sprocket you get. Then you replace everything.
The chain is the lightest according to MXA, who compared all of the major players in an article a few years back. It’s the same ultra bright chain as the DID you see on a lot of the pro team bikes.
The sprockets i cannot confirm but look at the design and you’ll see why it’s pretty safe to assume that they are the lightest.
KTM Chain guide: 250 2011
[ R-Tech 322g ] - 44g
[ TMD GP 212g ] -154g
[ OEM 366g ]
Silencer
OEM Silencer 1770g -0
PC Silencer 1180g -590g
PC Shorty Silencer 1094g -676g
PC Titanium Silencer 808g -962g
Bud R Silencer 1050g -720g
Thinktechnology seatfoam -560g
Fork weight
Kayaba PSf1 [ R-3908g L-4030g = 7938 ] -1222g
WP48 CC [ R-4658g L-4502g = 9160 ] 9160g
Øhlins TTX [ R-4468g L-4358g = 8826 ] - 334g
Showa 49 [ R-4974g L-4896g = 9870 ] + 710g
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