This is a brand new Yamaha Raptor 250 YFM250r complete aftermarket high performance kit!
Includes:
1. Vito's high performance 10.5:1 piston kit
2. Vito's mid-top end high performance CAMSHAFT kit + KOYO bearing
3. Vito's Top end gasket kit
This kit will run on premium pump gas and gives excellent power increases through out the entire powerband.
We have seen peak H.P. in the low to mid twenty's when used in conjunction with an aftermarket exhaust.
When used with a stock exhaust H.P. numbers from 18-20.
This is a great kit for any type of riding style.
Re-jetting will be required as with any engine modification.
The Forged PISTON KIT:
This is a 10.5:1 compression piston, so you can use pump gas still
74.00mm size, stock size
16 grams lighter than stock, quicker revving, and longer lasting
comes complete with rings, clips, and pin
also includes a top end gasket kit, with the BASE GASKET, HEAD GASKET, and EXHAUST PIPE GASKET
This is by Vito's Performance
piston replaces oem: 1S4-11631-10-A0
CAM:
This is engineered to increase your mid-range and top end horsepower and torque.
A nice bolt on mod that will increase your power all around, and be VERY noticeable in seat-of-your-pant power!
Includes genuine KOYO bearing
A perfect mod for the underpower 250cc engine
Uses the stock valve springs and rockers
GAKSET KIT:
This is a brand new Yamaha Raptor 250 complete top end gasket kit
This is by Vito's Performance
includes: Head gasket, base gasket, and exhaust gasket
fits every year Raptor 250: 2008 2009 2010 2011 2012 2013
Will also fit a 2013 XT250