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While acquiring the smooth feeling and excellent fuel effectiveness of the previous design O.S.SPEED R21GT, which was well gotten in the European market, the home of GT vehicles, the power feeling in the medium and low speed ranges has been enhanced by revising the counterbalance of the crankshaft. In addition, the freshly designed inner head improves idling efficiency, and an inner head O-ring is utilized to reduce vibration and enhance dust resistance. The outer head has been made lighter, and has developed into the O.S.SPEED R21GT II with attention to the detail. O.S. Engines likewise has a combo set with TB01 (EFRA2042) tuned silencer and MB01-70 manifold.
The crankshaft uses two tungsten counterweights. We have optimized the mass balance by reviewing the in-depth measurements.
The inner head has been modified. Enhanced low and medium speed feeling and idling efficiency. An O-ring is likewise utilized to reduce vibration and enhance dust resistance.
The weight of the brand-new outer head, compared to previous design has been reduced. Fins of outer head has been machined.
Geared up with 5 scavenging ports and 3 exhaust ports to fulfill IFMAR guidelines.
Geared up with a double-adjust type 22E(B) GT carburetor. The brand-new venturi is 7.0MM(RED) AL2.
COMBOSET comes with TB01 EFRA2042 (T-2060SC) + MB01-70 (M2003SC).
TLR-1222
