Attention! This item is available at special price just in connection with a SX-4 chassis.

The fine teeth gear system is delivered in exchange for the original gears etc.!

The advantage of the fine gear tooth system is very smooth running. It improves coasting of the chassis and leads therefore also to less fuel consumption.
Another positive feature is the low running noise.

The pinions are made of high-quality material and therefore very durable. The main gear is also made of steel with this gear tooth system.

The set fits H.A.R.M. touring chassis and is delivered with a total gear reduction of 5,38 which is standard on most tracks.
Further pinions for the adaption of the gear reduction are of also available. 

With new and improved support for clutch belt pinion!