Split Mono Leaf Spring 422-36 CT422-36 Suit Dodge & Plymouth 1966-78 Standard SPLIT MONO LEAF SPRINGS, STD Calvert Racing's Split Mono-Leafs are used by drag race enthusiast across the nation that demand nothing but the best performance! Tested on the fastest stock suspension cars in the world. They have been proven to withstand over 1,500 HP and 1/4 mile ETs in the low 7s!These leaf springs were designed to control and reduce excessive body separation in the rear suspension. Yet, are very active. Helping plant the rear tire without unloading. They also offer great stability at top end.Heavy duty springs help reduce spring wrap. All springs are assembled with grade 8 hardware, and heavy duty alignment clamps unlike any other. Aluminum bushings are pressed in front spring eyes, and polyurethane bushings are in rear spring eyes.Features: Direct replacementVarious ride height optionsHeavy duty 2 leaf designHeavy duty alignment clampsAluminium bushings in front spring eyes includedPolyurethane bushings in rear spring eyes includedDurable gloss black finishMade in the USA Application: DODGE Challenger 1970-74Charger 1966-78Coronet 1966-76PLYMOUTH Belvedere 1966-70Fury 1965-70GTX 1967-71Road Runner 1968-75Satellite 1965-74