OK for racing!
High speed pulley / variator kit to increase performance of your Yamaha or clone, plus Minarelli engines. Good take-off with consistent acceleration in the mid range. Higher top speed.
Full variator kit for Yamaha engines including:
Jog 90, Axis 90 and variants
Jog 80, Champ 80
Excel, Active, Box'n
Jogs with the model codes: 27V, 48F, 1HH, 1KH, 1RN, 2EX, 2JA, 2TA, 3CP "Sports"
Champ / RS (50cc)
FYM Urban (newer models with 16mm crank , including R4)
CPI Hussar (with 16mm crank)
Keeway Matrix 50
For other Minarelli engines with 13mm crank search product CT-P07C-3 (this category)
This kit includes:
new variator pulley (the "sheave")
hardened ramp plate and nylon sliders
new pulley collar
uprated clutch springs
set of 5.5g weight rollers
As well as increasing top speed, this kit can also decrease load on your engine because it extends the gearing at the top end, reducing the RPM.
"It goes like a rocket"
R.S, Auckland (fitted to Urban R4)