QA1 High Travel Coil-Over Spring Coil-Over 2.500" ID 7.0" Length - 300 lb/in Spring Rate Leg Protector Features:Designed for street/performance use with

Features:Designed for street/performance use with a mechanical and vacuum advanceWill not fit 235 and 261 enginesMust be used with an MSD Ignition ControlSupplied with a socket style distributor cap and rotorO-ring seals can be added to modified blocks to improve oil pressure controlSpecial oil tract improves lubrication to the distributor and cam gearNylon pads ensure smooth operation of the advance weightsAdvance weight pins are staked and tig welded to the plateMechanical advance assembly can be locked out for crank trigger systemsAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionPolished steel shaft is QPQ coated and guided by a sealed ball bearingMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeCNC machined billet aluminum housing and billet aluminum baseVacuum advance canister for improved economy (can be locked out)Easy-to-adjust mechanical advance with supplied springs and stop bushingsCARB E

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QA1 High Travel Coil-Over Spring Coil-Over 2.500" ID 7.0" Length - 300 lb/in Spring Rate Leg Protector Features:Designed for street/performance use withQA1 offers an assortment of high travel springs, available in 7", 9", 10", 12", 14" and 16" lengths, with a silver powder coated finish. These springs are lighter and have increased travel due to the larger distance between the coils. Made in the USA, these 2" I. D. high travel springs are manufactured from specially designed high tensile, chrome silicon alloy spring wire, which allows them to have fewer coils and a smaller wire diameter. These