Wiseco 4840M04750 Piston Kit - 0.50mm Oversize to 47.97mm, 11:1 Compression

Bore: 47.97mm
Compression: 11:1 Compression
Sizing: 0.50mm Oversize

SPECIFICATIONS.
Displacement: 91cc.
Bore - Standard: 47.00mm.
Bore - Actual: 47.50mm.
Bore - Oversize: 0.50mm.
Stroke: 51.80mm.
Compression Ratio - Actual: 11:1.
Note: Cylinder boring required.
ITEM CONTENTS.
1870XE - 47.50 mm Ring Set.
CW13 - ROUND WIRE PIN LOCKS 13MM (PAIR).
S592 - PistonPin 13mm x 1.535in. NonChromed SW

All Wiseco Pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life. Diamond turned finish from one of the many CNC computer controlled turning centers guarantees you a perfect finish with no size variation. Wiseco pistons can be installed in any of todays cylinder bore compositions. Wisecos state-of-the-art computerized manufacturing facility is dedicated to supplying both the high-perfomance racer and recreational enthusiast with the finest forged piston available in todays market place.

Vehicle Fitment:

2003 Yamaha TTR90
2003-2007 Yamaha TTR90E