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Fully enclosed for added strength, Calvert Racing’s patented design features pedestal tabs to ensure heat penetration. Perch extends to center line of axle tube covering more surface area for stability. Precision laser cut. Universal designs fit nearly every application. Installation requires welding to axle.
WELDING ONTO AXLE: Pinion angle recommendation is -2 to -4 degrees when used with CalTracs. NOTE: This is the angle of the pinion in relation to the angle of the output shaft of the transmission, NOT the driveshaft. Add the angle of the pinion yoke to the angle of the output shaft with the vehicle sitting at rest with weight on the tires.
Price includes set of two perches. Made in USA. *NOTE: HDP-350 different price.
Calvert Racing’s portable Ballast Box is made from 11 gauge steel and TIG welded at all seams. Able to hold 100+ pounds of lead/ ballast under the locking lid. Lid held in place by four locking flange fasteners for easy weight swap. Unlike many Ballast Boxes/kits, this box is completely portable and will accommodate many different kinds or combinations of weights/ballast, allowing you to place the weight exactly where you need it. Made in USA.
Bushings kit includes two aluminum bushings and two steel inserts for FACTORY leafspring front spring eye when installing CalTracs. Metal on metal bushings and inserts reduce friction. Made in USA. If you need replacement bushings for Calvert Springs, please call us directly. (BK-34 shown) NOTE: BK-21, different price.
Basic Flip Conversion kit for 1500 Series Trucks with CalTracs and 2.5″ wide or Calvert Springs already installed. Parts made in USA.
Kit includes two Rear Mounts, two patented Calvert HD Perches, set of four U-Bolts with Hardware. NOTE: HD Perches require welding to axle. DOES NOT INCLUDE CALTRACS.
Shims correct drive line angle. 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. Made in USA. (4-D shown)
Easy roll up with attached elastic loops and a carrying strap, easy to store in your truck, toy hauler, trailer, etc. and grab when you need it. No storage bag to store or carry, just roll, loop and go! Limited number in stock – order today!
Upper frame polyurethane shackle bushings for Camaro, Nova, etc. Includes bushings and spacers to adapt to your application. (M20973 shown)
Universal replacement bolt kit to mount rear shocks with eyelet ends. Includes bolts, nylocks, washers and spacers for two shocks.
Adapter Spacer Plates for factory GM perches when using Calvert Racing Split Mono Leafsprings. Mono and Multi-leafspring compatible sets available. Made in USA. NOTE: SP-03 Must be welded to perch. (SP-1 shown)
Change your ride height or refresh your spring rate on your current Calvert Split Mono Leafsprings. Includes pair of REAR HALVES and hardware, including center pins. Parabolic rear half design distributes the main spring pressure point through the length, reducing spring stress and breakage. Fits Calvert Split Mono Leafsprings. Various ride heights available. Made in USA.
Replace old worn out shackles with new shackles along with polyurethane bushings for the upper frame as well as the rear spring eye to reduce suspension binds and ensure a long service life. Price includes two shackles and hardware (if required). (SH-325×562 shown)
For Calvert or GM Factory Multi-Leafsprings. Heavy duty roller bearings keep the leafspring from binding up during suspension movement. Price includes set of two sliders. Made in USA. (SL-300CR shown)
Required to install CalTracs with Calvert Springs certain applications. Kit includes two hangers and required hardware. Most made in USA. (H1510 shown)
Required to install CalTracs with Calvert Springs on a 1962-1965 Ford Fairlane. Kit includes two hangers and two rear spring shackles.
All hardware required for mounting front hangers in many GM leafspring equipped cars, including the 1962-1969 Chevrolet Camaro.
Built for Mopar A or B/E Body. Sold as a pair. (SR-40 shown)
If you have CalTracs, You have Tie Down Points on your vehicle!
Secure your vehicle to your trailer or hauler with EASY TO INSTALL/EASY TO ACCESS Tie Down Brackets. Designed to easily bolt onto your CalTracs Rear Mounts. Fits all Standard, 1500 series, and S-10 Truck Truck CalTracs. 1/4″ Zinc coated Steel. 45 degree angle. Hole Diameter: 1- 3/8″. NOTE: DOES NOT INCLUDE STRAPS.
For axle ABOVE leafsprings. Robust 1/2″ diameter grade 5 Steel. Set includes four Round U-Bolts, 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.
Measure your axle diameter and length of current U-Bolts for part number. Made in USA.
For axle BELOW leafsprings. 9/16″ diameter grade 5 Round U-Bolts, zinc plated (gold color). Some part numbers include a rust resistant black coating. Set includes four U-Bolts, plates, nuts and washers. Measure your axle diameter and length of current U-Bolts for part number. *NOTE: SQ300x1800 has 3/8″ diameter bolts and are a different price from standard Square U-Bolts. Made in USA.
UPGRADED – NOW STRONGER THAN EVER! Specially designed pair of Adjustment Wrenches, constructed of 5/16″ 4340 Chromoly, RESISTS BENDING or BREAKING. Finished in a clear anodized zinc plating to resist corrosion. Rubberized grip for comfort and to reduce slippage. Short angled grip fits easily into tight spaces. Made in USA.
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