O.S. Speed 12 TZ Spec II Race-Tuned 1/10 Engine  [OS-11385]

O.S. Speed 12 TZ Spec II for 1/10 Track Racing

Built for serious on-road competition, the O.S. Speed 12 TZ Spec II brings tuned power and IFMAR compliance to 1/10 scale racers. The design balances durability and responsiveness so experienced drivers can extract consistent lap times from their setups.

Balance, Cooling and Vibration Control

Core to the O.S. Speed 12 TZ Spec II is a silicon-filled crankshaft that reduces vibration and improves balance. A nine-fin aluminum cooling head helps shed heat during long runs, while the two-piece turbo-style cylinder head with a magnesium outer shell improves thermal control and toughness under race conditions.

Included Items and Key Race Features

The package includes the P7 glow plug and the 11HBS Slide Valve Carburetor for smooth, precise throttle response suited to on-road tuning. Also supplied are a decal sheet, instruction manual, a 5.5mm carb reducer and a rubber sealing ring for the exhaust, so you have the basic parts needed to install and tune the engine.

The O.S. Speed 12 TZ Spec II is focused on performance for seasoned racers who want compact power in a 1/10 package. Note that this high-performance unit is supplied without warranty, so it is best suited to hobbyists comfortable with tuning and maintenance.