Big Bore Cylinder Barrel Kit: Yamaha YBR125 YBR 125 (2005-2014) Suzuki GSR400 Suzuki GSX 550 ES (GN71D)

Suzuki GSX 550 ES (GN71D) (1983-1987)

Yamaha XV 1700 Road Star Silverado S (2011-2014)

If you have a weak spark on your Kawasaki Z500 then the coils could be the culprit and it's a good idea to get some new coils on the bike

This cylinder kit has been manufactured to replace the original top end on an Aprilia SR50 for the years and models shown above

Big Bore Cylinder Barrel Kit: Yamaha YBR125 YBR 125 (2005-2014) Suzuki GSR400 Suzuki GSX 550 ES (GN71D)Brand New Big Bore Cylinder Kit to fit: Yamaha YBR 125 (2005 2014). This top end rebuild kit has been manufactured to upgrade the original cylinder kit on a Yamaha YBR125 to 150cc for the years and models shown above. Includes piston, gaskets, circlips, gudgeon pin and rings. To upgrade cylinder: 5VL E1310 00. 125cc to 150cc.