O.S. SPEED ENGINES

1:8 ON ROAD - PISTA


OS MAX-R21 1/8 On-Road

OS1B900

 

O.S.Engine Nitro Motor R21

Club racers rejoice! The R21 is based on the Championship heritage of the R2102 engine and delivers an unbeatable blend of power and value for 1/8 on-road racing. Its crankshaft and piston/liner are designed with premium performance and easy maintenance in mind, which makes it an ideal choice for beginners. This engine is upgradeable with high-performance O.S. Speed parts, letting you realize your full winning potential. High performance. Low price. That's what you can expect from the R21, only from O.S.

Features:

  • The perfect power plant for rookies and club racers.
  • Newly developed crankshaft and piston/liner with the capability to upgrade later to a Spec-class performer.
  • RP7 Turbo glow plug.
  • 8.5 mm carb reducer.
  • Speed flywheel collet.
  • Exhaust seal ring.
  • Dust cap set.


Specs:

  • Displacement: 3.49cc
  • Bore: 16.08mm
  • Stroke: 17.20mm
  • Port: 5
  • Power Output: 2.75 PS  @ 33,000 RPM
  • Practical RPM Range: 3.000~41.500 RPM
  • Weight: 350g
  • Includes: RP7 Turbo glow plug, exhaust seal ring, 8.5 mm carb reducer, dust cap set

 

289,00 €

  • disponibile
  • consegna in 3-5 giorni 1

SPEED R21 EURO II Engine only

OS1DR00

363,00 €

  • disponibile
  • consegna in 1-3 giorni 1

SPEED R21 EURO II W/EFRA2098 Comboset

OS1DR01

435,00 €

  • disponibile
  • consegna in 3-5 giorni 1

O.S. SPEED R2105 engine only

OS1D900

385,00 €

  • disponibile
  • consegna in 3-5 giorni 1

O.S.SPEED R2105 COMBO KIT

1D901

 

 

The O.S. SPEED R21 series won the previous World Championships held in the United States.
The "R2105", most of the parts has been newly designed, aiming for consecutive victories at the world championship to be held in Japan this year.
To increase torque on high-grip track surfaces, a newly designed 9-port sleeve is adopted. O.S. SPEED's traditional DLC coated crankshaft delivers linear power from low to top by changing the counter balance. The outer head has been mirror finish and by clear coat from the conventional color to a silver head base has been adopted. By adopting a thrust plate made out of steel, wear due to interference between the connecting rod and the cover plate during rotation is reduced and engine life is improved.
Adopting the latest design to most part of the engine, it is finished with content suitable for the flagship of the O.S. SPEED on-road engine.

Spec---------------------------
Displacement: 3.49 cc / 0.213cu.in.
Bore: 16.08mm / 0.633 in.
Stroke: 17.20mm / 0.677 in.
Output: 2.80 ps / 2.76 hp / 35,000 r.p.m.
Practical RPM range: 4,000-45,000 r.p.m.
Engine weight: 345.0g / 12.17 oz.
Includes: Reducer(8.5mm RED)/T-RP7 glow plug/Exhaust seal ring(1pc)/ Dust cap set (3mm, 16mm, 18mm 1pc each)

455,00 €

  • disponibile
  • consegna in 3-5 giorni 1