The Ruima 48mm Cast Iron Cylinder is a great option for those looking for reliable power without the high price tag. Ruima cylinders are some of the best made at the best prices. The Ruima 75cc big bore kit will give you the power you need to keep up with and pass that traffic. The cast iron material provides a durable, long lasting kit. The larger displacement will give you the most noticalbe improvement in any single upgrade.

If you are looking to upgrade just one thing, this is the place to start. With just a cylinder you can tune your carb and variator to work well with the 75cc. Once you move past the cylinder mod you will need to start upgrading other parts as well to get things to work properly. For those just starting out and trying their hand for the first time with performance mods the Ruima is a great option.

Technical features
- 48mm bore, 12mm wrist pin
- Standard stroke of 41.4mm

Kit comes with cylinder, head, piston, rings and gaskets.

This cylinder kit fits on the following scooters:
HONDA
DIO G 50 2t
DIO SP 50 2t
DIO SR 50 2t
DIO ZX <-1993 - 50 2t

KYMCO
K 12 50 2t
DJ Y 50 2t

SYM
DD 50 2t