- Fortin stub axles only
- Send us your Smart-Lok differential and we install the upgrades (requires OEM diff housing, ring and pinion)
- 1/8″ NPT port for temp sender
RT1 Front Differential
PART # N/AWe took what we learned in our Pro 4 and Trophy Truck front differentials and scaled those parts down to work with 33″ tires in a desert racing application. This is a Torsen style LSD differential that mechanically controls torque between the side gears. The differential housing is supported with billet side covers that house the same large tapered roller bearings that we use in our X3 open differential. Built into the OEM X3 Smart-Lok case, this front differential is BITD and SCORE legal.
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