4 DEGREE SHIMS – SET OF TWO
Pinion shims to help correct pinion angle under spring perches. For 2.5″ wide springs. Made of Billet aluminum.
NOW INCLUDES CENTER PIN LOCATOR BOLTS TO FIT ONTO CALVERT RACING SPLIT MONO LEAFSPRINGS. If you have a multi-springpack, you may need longer bolts.
Also available: 2 degree pinion shims
If you are unsure which part number will best fit your vehicle, please call Calvert Racing at 661-728-9600, Monday – Friday, 8:00am-4:30pm, PST.
$30.00
In Stock
SET OF FOUR SQUARE U-BOLTS w/hardware
2.5″ axle diameter x 11.5″ long, axle BELOW springs.
Square U-bolts, Grade 5 material, zinc plated, 9/16″ diameter. Set includes 4 U-bolts, plates, nuts and washers.
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 FEQ page or CalTracs Installation Guide for more info.
(SQ300x900 shown)
1999-2006 GM/Chevrolet 1500 series trucks (-2″ drop)
Designed to work directly with CalTracs. These hangers replace the original front hangar plates.
These front hangars are intended for use when aftermarket lowering hangars used to lower the truck will not allow the use of CalTracs on the spring. This product will lower the truck 2″ like most aftermarket hangars, but are designed to work directly with our CalTrac bar kits.
Includes (2) two hangers and required hardware.
NOTE: These will not fit long bed models or 454SS. without modification
SET OF FOUR SQUARE U-BOLTS w/hardware
3″ axle diameter x 11″ long, axle BELOW springs.
Square U-bolts, Grade 5 material, zinc plated, 5/16″ diameter. Set includes 4 U-bolts, plates, nuts and washers.
Calvert Racing’s square u-bolts are 9/16″ ” diameter. 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 FEQ page or 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.