6 Sigma Yamaha YSR50 Jet Kit – Stage 1/2/3 – 1987–92 YSR 50 Carburetor Tuning

Tuning your little YSR50?

This 6 Sigma jet kit is exactly what the doctor ordered.

Works with the stock carb, lets you pick between Stage 1, 2, or 3 setups depending on how spicy you want it.

Made in the USA, comes with a lifetime warranty.

Part number SIG6870.

Whether you’re chasing more top end or better throttle response, this kit gives you the jets you need to dial it in.