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CLICK HERE to customize your own Yamaha
DYNO JET POWER COMMANDER APPROVED TUNING CENTER 
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60-520-01
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FOR YAMAHA YFZ350 BANSHEESTOCK SLEEVE- Outside diameter 70.5mm
- Top flange 75mm
- This sleeve will accept pistons from stock (64mm) to 66.5mm (.100) oversized
- Stock porting
- Sold each
BIG BORE SLEEVE- Outside diameter 76mm
- Top flange 79mm
- This sleeve will accept pistons from 68mm to 70.5mm oversized
- Slightly modified port configuration increases horsepower
- No case modifications necessary
- Sold each
HEAVY-DUTY SLEEVE- Outside diameter 73mm
- Top flange 77mm
- This sleeve will accept pistons from stock (64mm) to 69.5mm oversized
- Stock porting
- Sold each
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