Crane Axle 14-Bolt Drive Flange Kit with Studs - 40-Spline
SKU: CA01052
We designed the Crane 40-Spline 14-Bolt Drive Flange Kit with the extreme abuse of off-road trail riding and racing in mind. Built to handle the harshest conditions, the drive plates are made from 8620 heat treated Chromoly steel while the engraved caps are made from 6061 aluminum
Made in the USA from premium materials, each component is precision-machined to ensure maximum durability and fitment on GM 14-bolt full-float axles. The 40-spline upgrade significantly increases the torque handling capability of your rear axle compared to factory 30-spline setups.
14-Bolt Drive Flange Kit Includes:
- (2) 40-Spline Drive Plates
- (2) Crane Axle Engraved Caps
- (16) Drive Flange Studs
- All necessary O-rings and hardware
Specifications
- Material (Drive Plate): 8620 Chromoly Steel, Heat Treated
- Cap Material: 6061-T6 Aluminum
- Spline Count: 40-Spline
- Axle Type: GM 14-Bolt Full-Float
- Country of Origin: Made in the USA
- Includes Studs, Hardware & O-Rings: Yes
Fitment
- Fits GM 14-Bolt Full-Floating Rear Axles
- Designed for 40-Spline Axle Shafts
- Compatible with most aftermarket 14-bolt 40-spline conversions
Tech Insight
Upgrading to a 40-spline drive flange setup is one of the most effective ways to bulletproof a 14-bolt axle for off-road racing or hardcore trail use. The increased spline count offers a larger shaft diameter, distributing torque more evenly and reducing the likelihood of twisting or shearing under load. Crane Axle’s precisely machined drive plates and billet caps ensure a tight fit, proper sealing, and long term serviceability even under punishing conditions.