Ultimate Racing MXR V3 Engine 21 3.5cc Ceramic Ball Bearings with 2142 Exhaust Pipe Set and Air Filter

Discover the Ultimate MXR V3 Ceramic Competition Combo, a precision-engineered ready-to-fit package for your RC car racing needs. This set includes the Ultimate MXR V3 Ceramic Engine, the high-performance Ultimate Racing 2142 Super Sonic Exhaust, and the efficient Ultimate Airmax Air Filter with oiled foam. Each component has been carefully selected and optimized to function as a seamless unit, delivering peak competition performance.

The engine is crafted by the renowned Japanese manufacturer O.S. Engines, based on their advanced square-stroke Speed B21 racing engine. Building on improvements from the previous version, the V3 model features upgraded parts such as the crankshaft, rear crankcase cover, and a modified cylinder/piston set. Additionally, the innovative 6 and 6.5mm FlowMax venturi and fine-tuned crankcase work enhance power output while maintaining fuel efficiency. A newly designed high-speed needle simplifies achieving optimal tuning.

Experience an exceptional power curve with smooth, linear power delivery at low RPMs, perfect for bumpy track conditions. At mid and high RPMs, the engine provides robust power with outstanding control, making it one of the best in terms of idle stability and drivability.

• Ultimate MXR V3 Ceramic Engine — a .21 competition engine featuring 3 transfers and exclusive MXR V3 series modifications.
• Ultimate Racing 2142 Super Sonic Exhaust — designed to complement the engine’s power curve by maximizing gas scavenging and extending the usable power band.
• Ultimate Airmax Air Filter with oiled foam — ensures high-flow, clean air intake from the first run, protecting the engine and optimizing carburetion.

Engine highlights include:

• Modified O.S. 21J3 Carburettor with exclusive needle carrier and high-speed needle for precise tuning and stable operation.
• Reworked crankcase designed to improve internal fuel flow, enhancing power and efficiency.
• Included Ultimate Airmax filter set for complete air filtration.
• Low center of gravity 8-fin cylinder head directing airflow onto the glow plug to improve carburation and idle stability.
• Innovative 6.5mm FlowMax venturi with optimized geometry for improved fluid dynamics, extra power, and longer engine run time.
• Swiss 7075-T6 aluminum rear crankcase cover with enlarged ports for better fuel flow and combustion efficiency.
• Redesigned liner and piston assembly based on the MXS foundation, delivering increased power without sacrificing fuel consumption.
• Durable ceramic rear bearing from O.S. Engines paired with dual-sealed steel front bearing from Ultimate Racing for extended durability.

Technical specifications:

• Displacement: 3.49 cc
• Power Output: 2.65 PS @ 34,000 rpm
• Stroke: Square 16.40 x 16.40 mm
• Liner Ports: 3 + 1
• Rear Bearing: O.S. Ceramic
• Front Bearing: Ultimate Racing Steel
• Crankshaft: 14mm balanced with two tungsten counterweights
• Carburettor: Modified O.S. 21J3 with exclusive needle carrier
• Glow Plug: P3 Turbo
• Engine Weight: 345g