APPLICATION: WORKS WITH SAVAGE 21 RTR, 25 RTR, & 25 SS WITH 4 SPIDER GEAR DIFFERENTIAL UPGRADE.

This is the Ofna Cross Pin Axles (4mm) that can be used to upgrade a Savage differential to 4 spider gears.

UPGRADE YOUR DIFFERENTIALS: A very popular upgrade for the Savage trucks is to install 4 spider gears in each differential (2 spider gears per differential is stock). Doubling the number of spider gears gives more gear contact and offers greater strength. This is a very popular upgrade for people who want to beef up their Savage differentials for greater strength and reliability so that it can handle more power. In order to install 4 spider gears in each differential, you will need a pair of interlocking cross pins for each differential. We try to stock the Ofna Cross Pin Axles OFN30773 for this purpose.

PLEASE NOTE: In order to upgrade both differentials on a Savage truck to 4 spider gears, you will need 2 packs of HPI86032 Gears and 2 packs of OFN30773 Cross Pins.