THIS KIT INCLUDES 2-HOLE PIVOT PLATES.
Built for:
Mopar Applications 
 
Low Pro 2301 (Low Profile allows approx. 1.5″ more ground clearance for vehicles used for every day street driving.)
 
Standard 2300 (Drag Race Application)
 
Tested on the fastest stock suspension cars 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.
Parabolic rear half design distributes the main spring pressure point through the length of the half, reducing spring breakage.
All of Calvert Racing’s 2.5″ wide 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.
Made in USA.
 
These springs are designed for DRAG RACING and have a higher spring rate / stiffer ride than stock springs. Spring halves are painted black before assembly, but some raw steel may show due to deburring/grinding sharp edges.
 
*If you have the original perches installed, you will need our Space Adapter Plates: SP-1 (for multi springs) or SP-3 (for mono springs). 
 
-1" Drop 
Stock 
+1"
 
1963-1976 Dodge Dart/Swinger
1962-1976 Dodge Demon
1964-1969 Plymouth Barracuda
1970-1976 Plymouth Duster
1962-1963 Plymouth Fury
1962-1964 Plymouth Savoy
1960-1976 Plymouth Scamp
1960-1976 Plymouth Valiant
 
CALTRACS STANDARD (4220)
THIS KIT INCLUDES 2-HOLE PIVOT PLATES.
Built for:
1970-1974 Dodge Challenger
1966-1973 Dodge Charger
1975-1978 Dodge Charger
1966-1976 Dodge Coronet
1970-1973 Plymouth Barracuda
1966-1970 Plymouth Belvedere
1965-1970 Plymouth Fury
1975-1978 Plymouth Fury
1967-1971 Plymouth GTX
1968-1973 Plymouth Road Runner
1966-1974 Plymouth Satellite
 
CALTRACS STANDARD (4210)
THIS KIT INCLUDES 2-HOLE PIVOT PLATES.
Built for:
1974 Dodge Charger
1965 Dodge Coronet
1965 Plymouth Belvedere
1964 Plymouth Fury
1974-1975 Plymouth Road Runner
1965 Plymouth Satellite