O.S. SPEED B2105 .21 Nitro Buggy Engine with TB02 Exhaust Combo – OSM1EK01

The O.S. SPEED B2105 Combo Set combines a competition .21 nitro engine with a TB02 EFRA2089 tuned pipe and MB01-75 exhaust manifold. Designed for 1/8-scale nitro off-road buggies, this fifth-generation B21 engine delivers smooth, progressive power for demanding race conditions.

A revised three-port cylinder liner and DLC-coated crankshaft improve power delivery, while the lighter cooling head helps vehicle handling. A ceramic crankshaft bearing and specially treated rear-cover thrust plate support durability. os-engines.co.jp

Key Features

• Competition engine for 1/8-scale nitro buggies.
• Revised three-port liner for stronger mid-to-high-range torque.
• DLC-coated crankshaft.
• Lightweight cooling head.
• Ceramic crankshaft bearing.
• Includes TB02 tuned pipe and MB01-75 manifold.

Specifications

Compatible Models

Designed for 1/8-scale nitro racing buggies accepting a conventional .21 competition engine. Check your chassis manual for engine mounting, clutch, flywheel and exhaust clearance requirements before installation.

Package Contents

• O.S. SPEED B2105 engine.
• TB02 EFRA2089 tuned pipe.
• MB01-75 exhaust manifold.
• P3 turbo glow plug.
• 6mm and 6.5mm carburettor reducers.
• Exhaust seal ring.
• Dust cap set.