OS Speed R21 with 21M2 (B) Shimo 1AM00
- Special outer head (silver with special design)
- Special crankcase (one side of the logo is shiny)
- Special carburetor restrictor (8.0mm silver)
- Special gasket combination (2 pcs of 0.1mm and 1 pc of 0.15mm)
(*Standard combination:1pc of 0.1mm and 1pc of 0.15mm)
- T-2080SC muffler is hand made at his factory.
- Special carburetor spacer to increase middle range torque.
- Steel rear ball bearing, which he prefers with combination of the special carburetor spacer.
|Displacementï¼||3.49cc (0.213cu.in) |
|Bore: ||16.08mm (0.633in.)|
|Practical RPM: ||(4,000~45,000r.p.m.)|
|Power Output:||(2.80ps/33,000rpm 2.76hp/33,000rpm.)|
|Weight: ||340g (11.99oz.)|