Nitro Engines

O.S. SPEED R21 SHIMO EDITION 2 Combo Set (1DJ00) TR02 EFRA2165 & MR03-WC  We have developed O.S.SPEED R21 Shimo edition collaborated with Takaaki Shimo, a multiple podium winner of the IFMAR 1/8 Racing World Championship. It is a 7-port...

This is the Ultimate M5S based on the OS B2103 Type R competition engine & Ultimate 2141 pipe combo. The 5-port long-stroke engine offers great power at medium-high speeds. The cooling head, the crankcase cover plate and the carburetor feature a new...

521 SPORT - S LINE - STEEL REAR BEARING and CRANKSHAFT

REDS Racing is excited to introduce a new generation nitro off-road engines called S Line. The first engine of the S Line is a 7 ports 3.5cc off-road engine called REDS Racing 721 S Scuderia. Why a new line of buggy engines?REDS is always striving to...

MASSIVE Big Block size - You cannot replace displacement with anything… but even more displacement!New CoolDownMax cylinder head - Improved cooling and higher efficiency through new cooling fin arrangementXTEC PowerCarb3 15S-2 carburettor - Flow...

This is the 3 port .21 Off-Road Ultimate M3X V2.0 Ceramic Competition Engine with Ultimate 2141 pipe combo. Like its predecessor M3X, the V2.0 is made by the prestigious Japanese O.S. Engines brand and it's based on their square stroke Speed B21 Ty...