Wiseco 4881M07700 Piston Kit (2-Ring) - Standard Bore 77.00mm, 13.5:1 High Compression

Generally ships to addresses in the contiguous United States the same business day if ordered by 12:15PM Central Time!

Bore: 77.00mm
Compression: 13.5:1 High Compression
Sizing: Standard Bore

Forged from high-silicon aluminum alloy for maximum strength and dependability..
Innovative forging design and piston skirt provide maximum horsepower and torque..
Wiseco High-Performance piston kits are priced with piston, rings, pins and circlips (unless noted otherwise)..
Oversize pistons require cylinder sleeving..
SPECIFICATIONS.
Displacement: 250cc.
Bore - Standard: 77.00mm.
Bore - Actual: 77.00mm.
Bore - Oversize: STD.
Stroke: 53.6mm.
Cylinders: 1.
Compression Ratio - Actual: 13.5:1.
Dome Type: Domed.
Skirt Coating: Moly.
Note: Nikasil Bore.
Note: RACE USE ONLY.
Note: 2-ring.
ITEM CONTENTS.
7700YC - 77.00 mm Ring Set .8 x 1.5mm.
CW16 - ROUND WIRE PIN LOCKS 16MM (PAIR).
S742 - PistonPin 16 x 41.91mm NonChromed SW
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Yamaha WR250F 2011-2013
Yamaha WR250F 2005-2009
Yamaha YZ250F 2005-2007