O.S. Speed R21GT II w/ T-2060SC Combo Set Engine

399,00 

O.S. Speed R21GT II w/ T-2060SC Combo Set Engine

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Descrizione

OS Speed R21 GT II is an all-new 5-port engine.
It features a newly developed underhead, cooling-head, crankshaft, Specially made to fit on-road GT track.
The OS Speed R21 GT has a 7mm carburetor restrictor.

Features:
  • The crankshaft uses two tungsten counterweights. We have optimized the mass balance by reviewing the detailed dimensions.
  • The inner head has been revised. Improved low and medium speed feeling and idling performance. An O-ring is also used to reduce vibration and improve dust resistance.
  • The weight of the new outer head, compared to previous model has been reduced. Fins of outer head has been machined.
  • Equipped with 5 scavenging ports and 3 exhaust ports to meet IFMAR regulations.
  • Equipped with a double-adjust type 22E(B) GT carburetor. The new venturi is 7.0mm(RED) AL2.
  • Engine combo set with T-2060SC exhaust
Specifications:
RPM Range 4.000 – 42.000 rpm
Max. Power Output 2.65 ps / 2.61 hp / 34,000 rpm
Weight 369g

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