The 21XZ-B Speed Spec II has set the gold standard of 1/8 scale racing engines. Now, it's available in a special Gold Edition to commemorate O.S.'s 80th anniversary. A gleaming gold cylinder head and carb insert makes it extra-attractive for collectors, while the legendary O.S. performance makes it a must for high-octane racing!
Features:
- A lighter crankshaft, with DLC coating, Tungsten weighting and silicone-filled intake passage
- Modified piston and con rod that reduces overall weight
- Outer head with V-shaped fins for lower CG and more efficient cooling.
- Dual-adjustable 21J carburetor for smoother acceleration and better fuel mileage
- Available with or without the T2090SC pipe set.
Specification:
- Stock Number: OSMG2046 Speed 21 XZ-B Spec II Engine w/T2090SC Pipe
- Stock Number: OSMG2047 Speed 21 XZ-B Spec II Gold Edition Engine
- Displacement: 0.213 cu in (3.49 cc)
- Output: 2.61 hp @ 34000 rpm
- RPM Range: 4000-42000
- Bore: 0.641 in (16.27 mm)
- Stroke: 0.661 in (16.8 mm)
- Weight: 12.52 oz (355 g)
- Includes: 21J carburetor, 6 mm and 7 mm carb restrictors, P3 glow plug, exhaust seal and dust cap set
- Requires: glow fuel
- OSMG2047 Also Requires: tuned pipe and manifold
Source: OS 
Recommended Comments
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.