Losi RC Inspired
ARRMA
Axial
Spektrum
Pro-Line racing
E-Flite
Tower Hobbies

STOCK UP ON BATTERIES & CHARGERS

Keep the throttle pinned all season long

SHIFT INTO OVERDRIVE

Full Throttle Rewards | VIP perks, exclusive deals & more

DAYS UNTIL RC FEST

STOCK UP ON BATTERIES & CHARGERS

Keep the throttle pinned all season long

SHIFT INTO OVERDRIVE

Full Throttle Rewards | VIP perks, exclusive deals & more

DAYS UNTIL RC FEST

Discontinued

OS Engines O.S. Speed R2104 1/8 Scale Engine

OS Engines - OSMG2025

OS Engines O.S. Speed R2104 1/8 Scale Engine Overview

The O.S. SPEED R2104 is a factory tuned engine solely developed for 1/8 racing competition. This new engine boasts 9-port piston liner to improve torque in low-middle power range. It also produces enough power as designed even for high traction tracks. The redesigned crankshaft counter weight enables smooth power transition from low to top. Distance of each fin of the heat sink head is enhanced for better air flow for cooling and better balance. The heat sink head is anodized in both black and red for a high contrast and powerful aesthetic.

OS Engines O.S. Speed R2104 1/8 Scale Engine Video Overview