#OS1EG01 - O.S. SPEED MAX-B21 Combo Set
✓ In stock, ready to dispatch
This 3.5cc nitro engine delivers smooth power across 4,000–41,000 RPM, bridging entry-level and experienced drivers seamlessly. The 1/8 buggy engine combines O.S. engineering excellence with included exhaust system and accessories, ready for both on and off-road racing performance.
Free UK delivery over £75 · Next-day dispatch before 3pm
Description
O.S.Engine OS1EG01 - MAX-B21 3.5cc 1/8 Buggy Engine with Exhaust System Combo
Made for 1/8 nitro Offroad 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
Included Exhaust System for 1/8 Buggy (not GT): TB02 EFRA2089 (T2090) Pipe/Muffler and MB01-75 (M2000SC) Exhaust Manifolder
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: 2.6ps @ 34.000RPM
Practical rpm range: 4.000-41.000
Weight: 361g
Included:
P3 glow plug
Reducer Venturi: 6mm (Orange) & 7mm (Yellow)
Exhaust seal ring
Dust cap set: 3, 16 & 18mm
ITB02 EFRA2089 (T2090) Pipe/Muffler and MB01-75 (M2000SC) Exhaust Manifolder
SKU: OS1EG01