SPECIFICATIONS
Displacement: 493cc
Bore - Actual: 87.50mm
Bore - Oversize: .50mm
Stroke: 82.00mm
Cylinders: 1
Bore Range: 87.00mm
Note: Pro-Lite
ITEM CONTENTS
3445TD - 87.50 mm Ring Set
546M08750 - Yamaha YZ490 84-90,WR500 92-93 3445TD
B1014 - Top End Bearing 18 x 23 x 21.8mm
CW18 - ROUND WIRE PIN LOCKS 18MM (PAIR)
S277 - PistonPin 18mm x 2.579in. NonChromed TW
W5286 - TopEndGsktKit Yam YZ/WR 490/500 84-93
Contains all the necessary components for overboring or rebuilding your top end
Feature forged pistons, rings, wrist pins, circlips and top end gasket set
Product Series
