SET OF FOUR SQUARE U-BOLTS w/hardware
3″ axle diameter x 13.5″ long, axle BELOW springs.
Square U-bolts, Grade 5 material, zinc plated, 9/16″ diameter. Set includes 4 U-bolts, plates, nuts and washers.
SQUARE U-BOLTS (spring OVER axle): We recommend torqueing truck/square u-bolts to 90-100 foot lbs. After running the vehicle down the track a few times, we also recommending checking the u-bolts and readjusting if necessary. Please see CalTracs Installation Guide for more info.
(SQ300x900 shown)
FLIP CONVERSION KIT for 1500 SERIES TRUCKS (for CalTracs)
1967-2019 Chevrolet Silverado and GMC Sierra Trucks
Basic FLIP CONVERSION KIT for 1500 Series Trucks with CalTracs* and a 3″ axle tube and 2.5″ wide spring* already installed.
Includes: Two Rear Mounts, Two patented Calvert Heavy Duty Perches, and set of Four U-Bolts with hardware.
A flip kit moves the axle from beneath the leaf spring to on top of the leaf spring, which lowers the truck.
ALSO AVAILABLE: Flip kit for 3″ axle tube and 2.5″ wide spring, part #FLP-3132
*THIS CONVERSION KIT DOES NOT INCLUDE CALTRACS.
SET OF FOUR SQUARE U-BOLTS w/hardware
3″ axle diameter x 15″ long, axle BELOW springs.
Square U-bolts, Grade 5 material, zinc plated, 9/16″ diameter. Set includes 4 U-bolts, plates, nuts and washers.
SQUARE U-BOLTS (spring OVER axle): We recommend torqueing truck/square u-bolts to 90-100 foot lbs. After running the vehicle down the track a few times, we also recommending checking the u-bolts and readjusting if necessary. Please see CalTracs Installation Guide for more info.
(SQ300x900 shown)
FLIP CONVERSION KIT for 1500 SERIES TRUCKS (for CalTracs)
1967-2019 Chevrolet Silverado and GMC Sierra Trucks
Basic FLIP CONVERSION KIT for 1500 Series Trucks with CalTracs* and a 3.25″ axle tube and 2.5″ wide spring* already installed.
Includes: Two Rear Mounts, Two patented Calvert Heavy Duty Perches, and set of Four U-Bolts with hardware.
A flip kit moves the axle from beneath the leaf spring to on top of the leaf spring, which lowers the truck.
ALSO AVAILABLE: Flip kit for 3″ axle tube and 2.5″ wide spring, part #FLP-3134
*THIS CONVERSION KIT DOES NOT INCLUDE CALTRACS.