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O.S.ENGINE

O.S. MAX-R21 V.2 Combo Set

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Article nr: OS1F401
Stock availability:
14 pcs
Delivery: 1-2 working days
Next delivery:
Retail price: 5337 kr
Product description

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 (φ3/φ16/φ18)
  • 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
Features
Country of origin: JP
Parts
  • Tools (1)
  • Starting Equipment (6)
  • Engines (41)
  • Exhaust Systems (5)
  • Other Accessories (2)
  • Hardware (3)
Popular Accessories
Files/Downloads
File name Language Published
OS1F400-MAX-R21-V2-manual.pdf EN 2025-03-13
GPSR

Manufacturer

Registred contact information for the products manufacturer.

Name OS Engines MFG.Co.Ltd
Address 6-15, 3-Chome Imagawa
Higashisumiyoshi-ku
546-0003 Osaka
Country Japan
Phone 0081-6-6704-2722
Email e-info@os-engines.co.jp
Homepage www.os-engines.co.jp

Importer

Registered contact information for the responsible company within the EU.

Name Minicars Hobby Distribution AB
Address Annelundsgatan 17
74940 Enköping
Country Sverige
Phone 0046-0171143000
Email info@minicars.se
Homepage https://www.minicars.se
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