CENTERING PIN 9/16″ (truck springs)
Set of two 1/2″ thick lowering blocks, interlocking and stackable via a 9/16″ centering pin and recess for most cars. You can stack more to achieve the drop you prefer: 1 pair= 1/2″ drop, 2 pairs= 1″ drop, etc.
Made with MILD STEEL, significantly stronger than aluminum.
LB-01 shown.
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.
$35.00
In Stock
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.
SET OF TWO SPRING SLIDERS
Designed to fit Calvert Leafsprings installed on ALL CARS & TRUCKS (except Chevy Bel Air). Outside diameter aluminum bushings: 1″.
May also fit most Chrysler factory springs due to rear bearing size.
Heavy Duty roller bearings keep the leafspring and body from binding up during suspension movement. Replaces the existing shackles.
SET OF FOUR ROUND U-BOLTS w/hardware
2.5″ axle diameter x 6″ long
Round U-bolts, Grade 5 steel, rust resistant coating, 1/2″ diameter. Sets include 4 U-bolts, with nuts and washers.
NOTE: While you can use your vehicle’s stock ubolts with CalTracs, Calvert Racing’s 1/2″ diameter u-bolts is an upgrade as most stock applications come with 7/16″ diameter u-bolts. We recommend torqueing the u-bolts to 65-70 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 the FAQ page on this website or CalTracs Installation Guide for more info.
(UR250x60 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