RCV Performance Ultimate CV Axles simply replace your K10 or K20’s weak GM 8.5 U-joint axle shafts with a high-strength constant velocity design. Tests prove Ultimate CV Axles to be twice as strong as OEM axle shafts, and they’re just as tough at a straight angle as they are at extreme angles – where U-joints are weakest. Ultimate CV Axles also eliminate U-joint binding to allow smooth transfer power to the ground. Even if you have big tires and big power there are no worries. Ultimate CV Axles are low maintenance and operate with a smoothness you can feel – whether off road or on the street. And we back it all with a “No Questions Asked” limited lifetime warranty.
Axle set includes both left and right CV axle shafts, outer stubs, SST seals and installation tool, installation instructions, synthetic moly grease, and installation hardware. Black oxide coating is standard. Optional nickel plating is available for extra corrosion resistance in salty environments – contact us for details!
Part: ’77-’87 GM K10 & K20 with GM 8.5 Axle Includes left and right axles
Axle Model: GM 8.5
Type: Non Unit Bearing
OEM Inner Spline: 28 RCV Inner Spline: 28
OEM Outer Spline: 19 RCV Outer Spline: 30
OEM Left Inner Axle Length: 35.46″
OEM RIght Inner Axle Length: 19.15″
OEM Outer Stub Axle Length: 9.94″
Warranty Voided: Over 40″ Tire
To ensure RCV axles will fit your vehicle, please verify your current axle shaft lengths match the OEM specifications listed above. RCV axles require 30 spline hub, or modification of 19 spline hub – contact us for details. Custom splines are available upon request – contact us for details, or use our Custom Axle Configuration Form. Please ensure your spindle splines have a minimum diameter of 1.312″ to receive RCV 1.282″ diameter outer stub. Minor clearance modifications are necessary. RCV clearance gauge included to facilitate process.