Maxima MX B4R EU - OS Spec 2 - Competition .21 Race Engine.
The Mx B4R EU Edition. The finest OS Spec 2 out there. Pre run in at the factory.
Displacement: 0.213 cu in (3.49 cc)
Bore: 0.641 in (16.27 mm)
Stroke: 0.661 in (16.8 mm)
Practical RPM Range: 4,000-42,000
Output: 2.65 HP @ 34,000 rpm
Weight: 355 g
Includes: 21J carburetor, 6 mm and 7 mm carb restrictors, P3 glow plug, exhaust seal and dust cap set
Requires: glow fuel, muffler, tuned pipe and manifold
Lighter crankshaft, with DLC coating, Tungsten weight and silicone-filled intake passage
Modified piston and con rod that reduces overall weight
Newly designed outer head with V-shaped fins for lower CG and more efficient cooling
Dual-adjustable 21J carburetor for smoother acceleration and better fuel mileage
A 6.5 mm restrictor is installed; 6 mm and 7 mm restrictors are included
Tuned and modified parts by Maxima: Sleeve, Crankshaft and Crankcase.
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