Torque Spring 2Fast Red 34K (70-86cc) For 2Fast Rear Pulley Only TRX 450R Very torquey and powerful Exhaust

Very torquey and powerful Exhaust System

Fits Stock 50/70 12x16x16

we have contributed the software

basic weight marked on one sideDriven split pulley contrast spring made of pre-hardened steel-chrome-silicon

The crankshaft makes it possible to use the large-displacement R/T cylinders and also provides a bargain alternative to Malossi’s BigBore crankshafts

Torque Spring 2Fast Red 34K (70-86cc) For 2Fast Rear Pulley Only TRX 450R Very torquey and powerful ExhaustHigh Load Torque spring made in Italy by 2Fast. This torque spring is made to reach the maximum performance of your 2Fast cylinder kit. Warning! Spring Diameter ; 58mm. Only fits Piaggio or 2Fast rear pulley.