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OS Speed ​​.21 Engine R2105 SET - 1D901

OS Speed ​​.21 Engine R2105 SET - 1D901

par O.S.
UGC 1D901
Disponibilité:
Rupture de stock
Épuisé
$521.00
$521.00 - $521.00
$521.00
$391.00
$391.00 - $391.00
$391.00

Informations sur l'envoi

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OS Speed ​​.21 Engine R2105 (1) - 1D900

Introducing the OSSPEED R21 Series, the pinnacle of the motor vehicle category!!!

The OS SPEED R21 series won the last world championships in the United States.

The "R2105", which has most of its parts newly designed, is expected to win the world championship, which will take place in Japan this year.

This is a combo set:

  • Engine R2105
  • TR01 (EFRA2165) resonance tube
  • MB02 manifold

To increase torque on high-grip track surfaces, a newly designed 9-speed sleeve was used. OS SPEED's traditional DLC coated crankshaft delivers linear performance from bottom to top by altering counterbalance. The outer head was highly polished and converted from the conventional color to a silver head base using a clear coat. Using a steel pressure plate reduces wear caused by interference between the connecting rod and cover plate during rotation and increases engine life.

Most of the engine's parts are designed using state-of-the-art technology and feature content consistent with the flagship OS SPEED road engine.

To increase torque, the sleeve features 9 newly designed openings.

By redesigning the counterweight of the crankshaft, power delivery is improved from bottom to top.

The silver head is polished and has a different color than the traditional one.

A new mold was used for the crankcase and the OS SPEED logo was applied to the exterior design.

Based on the 21M, which already had a good reputation, by changing the needle O-ring from 1 piece to 2 pieces to prevent the needle setting from changing.

Using a steel pressure plate reduces wear caused by friction between the connecting rod and cover plate during rotation and improves engine life.

Specifications:

  • Displacement: 3.49 cc / 0.213cu.in.
  • Bore: 16.08mm / 0.633 in.
  • Stroke: 17.20mm / 0.677 in.
  • Power: 2.80 hp / 2.76 hp / 35,000 rpm.
  • Practical speed range: 4,000-45,000 rpm.
  • Motor weight: 345.0 g / 12.17 oz.
  • Contains: Reducer (8.5mm RED)/T-RP7 Glow Plug/Exhaust Seal Ring (1pc)/Dust Cap Kit (3mm, 16mm, 18mm 1pc each)
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