Ultimate Racing MXS .21 Nitro Racing Engine (Ceramic)

This is the 3 port .21 Off-Road Ultimate MXS Ceramic Competition Engine. Like its predecessor M3X, the MXS is made by the prestigious Japanese O.S. Engines brand and it's based on their square stroke Speed B21 Ty Tessmann II edition engine but has some modifications on the crankshaft as well as on the back plate to improve performance. This engine has more power and returns to idle way better.

With this engine you will have a really good power band with a ton of usable power. It has a smooth bottom end which worked well on the bumpy track and then has a lot of mid-range pop and feel to it. It is one of the best idling engines on the market.

TECHNICAL SPECIFICATIONS

Displacement: 3,49 cc

Power Output: 2.61 hp @ 34,000 rpm     

Practical Range RPM:  4,000 - 42,000 rpm

Bore x Stroke: 16,40x16,40mm

Sleeve: 3 + 1 ports

Rear Ball Bearing: ceramic

Front Ball Bearing: steel

Crankshaft: 14 mm

Carburetor: 21 J3

Glow plug: P3 Turbo

Exhaust Position: rear