O.S. Engine 12XZ(P) Competition Lightweight Engine  [OSMG1990]

High-Performance On-Road Power from O.S. Engine 12XZ

The O.S. Engine 12XZ is crafted for 1/10 on-road applications where precision and durability matter. Approved for competitive use, it targets racers who need dependable track performance.

Tuned for Practical Power Delivery

Refinements to the crankcase and liner port deliver stronger torque in the low and mid rpm ranges, giving improved acceleration and better drivability through corners.

Component Upgrades That Matter

• Low-Friction Crankshaft: A specialised coating cuts friction and prolongs service life, while silicone filling promotes smoother induction characteristics.
• Precision Balance: Tungsten weights are fitted to reduce vibration at high revs and maintain stable running.
• Optimized Cooling: The lightweight machined aluminium outer head includes holes to lower mass and boost airflow for cooler operation under race load.

Matched Carburetion with the 12F(B)

The supplied 12F(B) carburetor complements the engine map and, alongside the RP6 glow plug, helps produce stable combustion across a usable rpm span from 5,000 up to 44,000.

For racers seeking a nimble, high-output engine with effective cooling, the O.S. Engine 12XZ presents a compact solution that stands up to consecutive race laps.