REDS Buggy engine 921 Speciale DLC Ceramic Break in

The REDS 921 Speciale Limited Edition is a premium 3.5cc nitro buggy engine engineered for top-tier 1/8 racing. This ENBU0041B version arrives with a professional pre break-in service by Mario Rossi, helping you achieve a stable idle and consistent performance from the outset. Built around a new 9-port cylinder and a balanced DLC-coated crankshaft, it delivers excellent fuel efficiency, great drivability and strong torque across the power band.

An RTX Rotating Backplate reduces friction between the conrod and backplate to enhance stability at idle and optimise power, while high-protection bearings – a double-seal front and a 9-ball ceramic rear – offer durability and reliability under extreme conditions.

Key Features

• New 9-port cylinder for higher performance, improved efficiency and torque
• RTX Rotating Backplate to reduce friction, stabilise idle and boost power
• High-protection bearings: double-seal front and 9-ball ceramic rear
• Balanced DLC (diamond-like carbon) crankshaft
• VCX3-A aluminium short-needle carburettor with 7.0 mm venturi (options available)
• Fuel consumption rated at > 9 minutes

Technical Specifications

• Category: 1/8 Buggy
• Displacement: 3.5 cm³
• Bore: 16.2 mm
• Stroke: 16.9 mm
• Inlet ports: 7
• Outlet ports: 1
• Front bearing: 7x19x6 double seal
• Rear bearing: 14x25.4x6, 9-ball high-durability ceramic
• Carburettor diameter: 7.0 mm (optional: 6.0, 6.5, 7.5, 8.0)
• Carburettor type: VCX3-A aluminium, short needle
• Weight: 345 g
• Fuel consumption: > 9 minutes
• Operating temperature: 110–130°C
• Part numbers: REDENBU0041B (Wheelspin Models), ENBU0041B (manufacturer)

Available Models & Pre Break-In

• ENBU0041: 921 Speciale Limited Edition
• ENBU0041B: 921 Speciale Limited Edition – Pre Break-In Service by Mario Rossi

Recommended Pairings & Fuel

• Glow plug: REDS TS4
• Exhaust system: 2143 X-ONE High Torque Plus Pipe
• Fuel: 16–30% nitro, 8–10% oil
• Break-in fuel: 12% oil