CYLINDER WORKS 270cc BIG BORE KIT YAMAHA YZ250F'14-18 WR250F'15-19 21010-K01

  
NEW CYLINDER WORKS BIG BORE KIT 21010-K01. FITS : YAMAHA YZ-250F 2014-18, YZ-250FX 2015-19 & WR-250F 2015-19. BIG BORE 270cc, +3mm to 80mm. This CYLINDER WORKS Big Bore Kit for the YZ-250F, WR-250F takes the standard 250cc to 270cc. The new cylinder features a 80mm (+3mm) bore size.

The cylinder is made to match the appearance of a stock cylinder. Provided with the kit is the Vertex piston which has been fitted to the cylinder.

A Cometic big bore top end gasket kit finsihes the kit. The picture is for reference and is the exact model.