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CalTracs Rear Mounts
CalTracs HD Rear Spring Mount (MT-2503)
SOLD SEPARATELY
Rear Spring Mount for HD Truck CalTracs assembly. Designed for HD Trucks with 3.5″ diameter axle AND 3″ wide leafspring.
Made with 5/16″ mild steel to withstand the correct torque on your u-bolts and keep your rear-end from moving. Black gloss powder coated for extra durability.
MOUNT FITS LEFT OR RIGHT SIDE.
(0 reviews) -
Accessories
6 Degree PINION SHIMS/PAIR-CAR (6-D500)
6 DEGREE SHIMS w/3/8″ pin with 1/2″ diameter head most cars- SET OF TWO
Pinion shims to help correct pinion angle under spring perches. For 2.5″ wide springs. Made of Billet aluminum.
INCLUDES 3/8″ CENTER PIN AND BOLTS TO FIT ONTO CALVERT RACING 2-1/2″ WIDE SPLIT MONO LEAFSPRINGS. Hole prevents possible slippage on more extreme angle. If you have a multi-springpack, you may need longer bolts.
Also available: 2 and 4 degree pinion shims
6-D500 SHOWN
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Accessories
U-Bolts, Round/set, 3.5″x9″ clearance (CUR350x90)
CLEARANCE
SET OF FOUR ROUND U-BOLTS w/hardware
3.5″ axle diameter x 9″ long, axle ABOVE springs
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.
(0 reviews) -
Accessories
U-Bolts, Round/set, 2.85″x7″ (UR285x70) DISCONTINUED
SET OF FOUR ROUND U-BOLTS w/hardware
2.85″ diameter x 7″ long, for axle ABOVE springs
Round U-bolts, zinc plated Grade 5 material, 1/2″ diameter, kits 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.
(UR275x70 shown)
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Accessories
2.25 ” Axle Perch/pair (HDP-225)
SPRING PERCHES FOR 2.25″ AXLE TUBE
Set of (2) Two Perches. Fully enclosed for added strength, pedestal tabs ensure heat penetration when welded to housing. Perch extends to center line of axle tube for more surface area. Precision laser cut. Requires welding to axle, see graphic for info.
Check out the comparison graphic to see how Calvert’s patented Heavy Duty Perches compare to other manufacturer’s stock perches.
Patented HD Axle Perches. Universal design fits nearly every application. Available to fit the most common axle tube diameters; 2.25″, 2.5″, 2.75″, 3″, 3.25″ and 3.5″
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.
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Accessories
2.5 ” Axle Perch/pair (HDP-250)
SPRING PERCHES FOR 2.5″ AXLE TUBE
Set of (2) Two Perches. Fully enclosed for added strength, pedestal tabs ensure heat penetration when welded to housing. Perch extends to center line of axle tube for more surface area. Precision laser cut. Requires welding to axle, see graphic for info.
Check out the comparison graphic to see how Calvert’s patented Heavy Duty Perches compare to other manufacturer’s stock perches.
Patented HD Axle Perches. Universal design fits nearly every application. Available to fit the most common axle tube diameters; 2.25″, 2.5″, 2.75″, 3″, 3.25″ and 3.5″
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.
(0 reviews) -
Accessories
U-Bolts, Square/set, 2.5″x7.5″ (SQ250x750) DISCONTINUED
** THIS PRODUCT IS DISCONTINUED **
SET OF FOUR SQUARE U-BOLTS w/hardware
2.5″ axle diameter x 7.5″ long, axle BELOW springs.
Square U-bolts, Grade 5 material, zinc plated, 9/16″ diameter. Set includes 4 U-bolts, plates, nuts and washers.
(SQ300x900 shown)
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Accessories
SHACKLE BUSHINGS/kit MOPAR (M20697)
UPPER FRAME RAIL POLY BUSHING KIT (REPLACEMENT)
Fits most MOPAR vehicles. 1″ Outer Diameter, 9/16″ Inner Diameter
Polyurethane shackle bushings ensure your vehicle is free of chassis bind and provides a longer service life in comparison to rubber bushings. This kit does NOT include rear spring eye bushings.
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