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They're designed to be installed with no modifications
Speedmaster direct drums are designed to prevent slippage and are able to withstand strong shifts on high horsepower applications
The internal components are made from EN36 Material as used in racing
Speedmaster TDS lightweight spools give you the traction you need by locking the axle shafts together
Speedmaster oxygen sensor bung assemblies offer a no-weld installation
Ford C4 Transmission Booster Valve Set They're designed to be installedWhen rebuilding high performance or heavy duty transmissions, many rebuilders wish to increase line rise. Speedmaster large ratio boost sleeve and valve kit address poor line rise, direct clutch failure and soft slide shift complaints caused by a worn sleeve.
