O.S.Engine 1F401 - O.S. MAX-R21 V.2 Combo Set

O.S.Engine MAX-R21 V.2 On-Road Racing Engine Combo Set

New MAX-R21 VER.2 for 1/8 on-road!
Introducing a new on-road engine for entry level and sports users!

MAX-R21 VER.2 is developed for 1/8 on-road racing with excellent cost performance that can be easily used in races for entry level to sports users. Crankshaft and carburetor have been revised from the previous model for more ease of use. Outer head is blue which is image color for Max series with a new laser engravement design.

Whats new on the Max-R21 Version 2?

• Crankcase design is from R2106
• The crankshaft has 3 bronze counterweights for better low/mid range speed feel and easier to handle
• New outer head has better cooling and also with a new laser engravement design
• The inner head has similar O-ring type used in the R2106
• The carburetor is 21M4 which is same design as with the R2106 engine for easier adjustment

Standard accessories

• RP7 glow plug
• 8.5mm venturi (purple)
• Exhaust seal ring
• Dust cap set (f3/f16/f18)
• Flywheel cone

Specs:

• Displacement: 3.49cc
• Bore: 16.08mm
• Stroke: 17.20mm
• Output: 2.75ps / 2.71hp @ 32000RPM
• Practical RPM range: 4000-44000
• Engine Weight: 350g

Combo set includes

• TR02 EFRA2165 Pipe
• MR02 Exhaust Manifolder