Will also suit Chinese pit bikes / thumpsters etc
Header pipe is 32mm so they are good for up to 125cc and can be used for 140cc pit bikes.
If you want it for a bigger bore engine than that you would make up a different header pipe to allow for more flow.
The RS-2 is a potent and versatile design that evolved from our original TRC, engineered to provide increased power and power delivery.
With a different pyramidal shape that features increased volume, the RS-2 is a quieter system with a larger core — and it offers the added bonus of outstanding performance in a value-priced package.