O.S Speed R21 Euro Spec II Engine Combo | TR01 EFRA 2098 + MR02

The O.S.SPEED R21 EURO II is a nitro engine for 1/8 scale on-road RC cars, built for competition. It inherits the smooth, easy-to-use feel of its predecessor, the R21 EURO Spec, with improved low- and mid-range power delivery thanks to a revised counterbalanced crankshaft, plus a smoother RPM drop and more stable idle even in long, demanding races.

This combo includes the EFRA2098-homologated TR01 exhaust and the MR02 manifold, designed specifically for European circuits with long straights.

Technical specifications

• Displacement: 3.49 cc
• Bore: 16.08 mm
• Stroke: 17.2 mm
• Output: 2.8 PS / 2.76 HP at 35,000 rpm
• Practical RPM range: 4,000-45,000 rpm
• Engine weight: 334 g
• Includes: RP7 turbo plug, exhaust seal ring, flywheel collet, 3/16/18mm dust cap set
• Combo: TR01 EFRA2098 (T-2080SC) exhaust + MR02 manifold