Rugged Radios Polaris General Complete Communication Kit with Bluetooth Intercom and 2 Way Radio Ring & Pinion 5 amp single spark through EQ TCC294A 5 amp single spark through high rpm┬ ¼Î“ÇáEasy to adjust mechanical advance with supplied springs and stop bushings┬ ¼Î“ÇáVacuum advance canister for improved economy (can be locked out)┬ ¼Î“ÇáCNC machined billet aluminum housing and billet aluminum base┬ ¼Î“ÇáHousing is 5 8” smaller in diameter than stock Ford distributors┬ ¼Î“ÇáMaintenance free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range┬ ¼Î“ÇáPolished steel shaft is QPQ coated and guided by a sealed ball bearing These cylinder heads feature an extra thick deck and extra material in the spring pockets for a heavy duty casting that can be used with high lift cam and heavy spring combinations Business Band directly through the headsets or helmet kits