O.S. Speed R21 Shimo Edition 3 Combo with Exhaust

The OS Speed R21 Shimo Edition 3 represents the absolute pinnacle of 1:8 On-Road motors. Developed in collaboration with legendary racer Takaaki Shimo, this special edition features innovations that maximize performance and durability in the most demanding racing conditions.

Key innovations and features:

• The newly designed crankcase allows the use of spacers on the exhaust, which increases power throughout the rev range depending on the track.
• A 9-hole cylinder liner and a newly coated piston ensure longer life and higher efficiency.
• The use of a ceramic rear ball bearing reduces friction and increases reliability at extreme speeds.
• Equipped with a dust cover ring that eliminates fuel and air leaks, ensuring stable idling.
• Brand new engine head fin design in elegant dark gold for better heat dissipation and a unique look.
• The proven "R" connecting rod from the R2106 model withstands even the toughest road racing demands.

Package contents:

• OS Speed R21 Shimo Edition 3 engine
• Complete exhaust system: tuned exhaust TR03 (EFRA2196) and elbow MR05
• Glow plug: T-RP7 (Turbo)
• Venturi reducer φ 8.5 mm
• Exhaust sealing ring
• Dust cap set 12-30 (φ 3, φ 16, φ 18)