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CalTracs - TrucksCalTracs Truck (5700)
2004-2006 Dodge Ram SRT-10 Quad Cab
Designed especially for trucks, axle BELOW springs. Bolt On traction system. Full pre-load adjustability, keeps axle from rotating/maintains pinion angle, eliminates spring wrap up, improves 60′ times. Black powder coated. Berlin-style pivot plates for most applications.
Specializing in leaf spring traction systems since 1995, the Calvert Racing Team knows what it takes to get your truck hooking harder than ever whether you’re drag racing, sled pulling or just towing. Helps eliminate wheel hop. Designed by racers for racers, CalTracs boasts unsurpassed quality and craftsmanship; the competition is eliminated right off the starting line. The preload link is made with Chromoly, lightweight but strong, ensuring maximum leverage and minimum flex. HD Rod Ends have a radial static load capacity of over 14,000 pounds. Two-piece aluminum front spring eye bushings assembly keeps the front pivot squared and rigid. The rear mounts are made with 5/16” mild steel to withstand the correct torque on your u-bolts, keeping the rear end from moving.
This kit requires and INCLUDES a set of square u-bolts.
SQUARE U-BOLTS (spring OVER axle): 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 FAQ page or CalTracs Installation Guide for more info.
FULL COLOR INSTALLATION GUIDE INCLUDED.
NOTE: Your final product may vary from photo depending on your application. Some applications require additional hardware.
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CalTracs BIG LINKS
CalTracs BIG LINK KIT (BLK-230-255-290)
Upgrade kit especially for Lifted or Offroad Trucks
Stronger, more robust bars and coarse thread rod ends eliminate binding, especially in the dirt.
SET OF TWO BIG LINKS and FOUR COARSE THREAD HEIM JOINTS
Replaces standard links and Heim joints on HD Trucks only.
1.5″ diameter x 25.5″ force transfer Big Links.
Made with 4130 Chromoly, the CalTracs preload Big Links are 1/4″ larger diameter than the standard force transfer link and are threaded specifically for added strength, ensuring maximum leverage and minimum flex. Gloss black powder coated for added durability.
Includes four (4) required coarse thread Heim joints.
NOTE: Standard Heim joints will NOT fit coarse threaded ends.
PLEASE INCLUDE YEAR, MAKE AND MODEL IN THE NOTES SECTION OF YOUR ORDER
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CalTracs - Standard
CalTracs Standard (4259)
THIS KIT INCLUDES 2-HOLE PIVOT PLATES.
Designed for applications with inboard springs.
1965-1973 Dodge Polara w/ 3″ stock inboard kit
1971-1973 Plymouth Fury w/ 3″ stock inboard kit
Rod Ends/Heim Joints NOW COME WITH GREASE ZERKS. Add a small amount of grease to reduce chatter.
Designed by Race legend John Calvert. Bolt On traction system. Full pre-load adjustability, keeps axle from rotating/maintains pinion angle, improves 60′ times. Black powder coated for durability. Standard and Low Pro pivot plates available.
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Specializing in leaf spring traction systems since 1995, the Calvert Racing Team knows what it takes to get your car hooking harder than ever. Designed by racers for racers, CalTracs boasts unsurpassed quality and craftsmanship; the competition is eliminated right off the starting line. The preload link is made with Chromoly, lightweight but strong, ensuring maximum leverage and minimum flex. ¾” Rod Ends have a radial static load capacity of over 14,000 pounds. Two-piece aluminum front spring eye bushings assembly keeps the front pivot squared and rigid. The rear mounts are made with 5/16” mild steel to withstand the correct torque on your u-bolts, keeping the rear end from moving.
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NOTE: Your final product may vary from photo depending on your application. Some applications require additional hardware. U-bolts NOT included in the kit but are available if desired.FULL COLOR INSTALLATION GUIDE INCLUDED.
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Lifestyle
USA Themed Camp Chair – Special Purchase (LS-USAChair)
SPECIAL PURCHASE!
USA themed collapsible Camp/Pit Chair, storage bag with shoulder strap, AND TWO cup holders (very important!!
). And, bonus, the Calvert Racing logo loud and proud on the back!Weighs less than 6lbs. Rated at 250lbs.
Happy Birthday, America… Priced at BELOW OUR COST! Limited number available.
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Lifestyle
FLEX TAPE MEASURE – TWO (LS-FLEXTAPE-2)
NEW!! Calvert Racing FLEXIBLE MEASURING TAPE – SET OF TWO
Measures up to 5 feet/60 inches, both inch and metric units. One button fast recoil, on small carabiner chain.
Because sometimes you need to measure along a curve, a circumference, or in tight spaces, something traditional metal tape measures cannot do accurately!
Set of two. Flex Tape Measure housing 2″ wide.
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Lifestyle
LIP BALM, FIVE (LS-LIPBALM-5)
NEW!! Calvert Racing LIP BALM, set of FIVE
Soothing lip balm with BEESWAX and other natural ingredients (no petrolatum!), lightly flavored double mint. Perfect for those long days at the races, in the pits, on vacation, even around the house!
Net wt. .15 oz. Made in USA.
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Lifestyle
LIGHTED SCREWDRIVERS, SET OF TWO (LS-LIGHT-2)
NEW!! Calvert Racing LIGHTED compact Screwdriver Set w/Bubble Level, set of Two
1″ x 5.5″, includes 4 screwheads (2 standard, 2 phillips, stored under cap) for on the go small repairs. Turn on light for those tight, dark spaces. Battery included.
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Lifestyle
IRON ON LOGO PATCHES, SET OF TWO (LS-Patch-2)
NEW!! Calvert Racing PATCH, set of TWO
3″ diameter round red and blue fully embroidered iron-on logo patch: FORGET CALM… LET’S GO RACING
Perfect for jackets, hats, shirts, jeans… anywhere you’d like to show off your RACING style
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Leafsprings
Split Mono Leafsprings/pair F-150 -1″ (731-44)
COMING SOON – MID JULY 2026
2021-2025 FORD F-150 Trucks ONLY – Will NOT FIT other years.
3″ WIDE SPLIT MONO LEAFSPRINGS, PER PAIR
-1″ DROP RIDE HEIGHT
Lighter than factory leafspring packs, Calvert’s parabolic split mono-leaf design is built especially for street or racing ONLY. These springs are not intended for hauling or towing.
Tested on the fastest stock suspension vehicles in the world, Calvert’s Split Mono Leafsprings are designed to control and reduce excessive body separation in rear suspension and plants the rear tires without unloading.
All of Calvert Racing’s Split Mono Leafsprings are assembled to order with grade 8 hardware and heavy-duty alignment clamps. Aluminum bushings are pressed into the front spring eyes and polyurethane bushings in the rear spring eyes, these springs have been proven to withstand over 2,500 HP at ¼ mile ETs in the 6s.
NOTE: Calvert Racing Springs are designed for DRAG RACING and have a higher spring rate / stiffer ride than stock springs. Spring halves are dipped in black paint before assembly, but some raw steel may show due to deburring/grinding sharp edges.
Calvert Split Mono Leafsprings are designed to work with CalTracs to maintain arch. While street driving does not put undue stress on the springs, racing with Calvert springs without a traction device installed may result in bent or de-arched springs.
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