*The store has not been updated recently. You may want to contact the merchant to confirm the availability of the product.
The Skytec gear set1 replaces the stock plastic gears with the stronger Skytec Delrin gears (A & B). As the modulus for the gears is changed from mod0.4 (stock) to mod0.5(Skytec) the set includes TWO motor pinions mod0.5/11T! It also includes the larger than stock SBN Japan high quality industrial grade bearing for the outer shaft gear B .