OS MAX B21 3.5cc BUGGY ENGINE

O.S.MAX-B21 3.5cc Buggy Engine 

Made for 1/8 nitro Offroad and 1/8GT 

MAX-B21 is easy to use from entry-level users to sports users and has excellent cost performance. Based on the O.S.SPEED B2104 series engine, it has a well-balanced combination of smooth speed and power delivery and can be used in both on and off-road racing situations. 

Features: 

The crankcase is based on the O.S.SPEED B2104 crankcase 

Piston and sleeve is improved based on O.S.SPEED B2104 

The connecting rod is the same as the O.S.SPEED buggy engines 

This engine will replace the MAX-21 XR-B VER.3 and MAX-21 XZ-B VER.2. 

Specs: 

Displacement: 3.49cc 

Bore: 16.27mm 

Stroke: 16.80mm 

Output: 

Practical rpm range: 

Weight: 352g 

Included: 

P3 glow plug 

Reducer Venturi: 6mm (Orange) & 7mm (Yellow) 

Exhaust seal ring 

Dust cap set: 3, 16 & 18mm