Championship-winning prestige.

O.S.SPEED21XZ-B DEBUTS!!

In 2006, Mark Pavidis won the IFMAR Off-Road World Championship using the O.S. SPEED 21VZ-B V-Spec. You may also vividly remember Atsushi Hara’s victory in the 2008 IFMAR Off-Road World Championship with his O.S. SPEED 21VZ-B V-Spec II. For all prospective champions, the O.S. SPEED 21XZ-B now hits the market with a completely new design that surpasses the previous model in every respect.

The all-new champion’s engine.

With the SPEED 21XZ-B, the power you need to win is available at your command. It delivers instant throttle response and powerful torque over the entire rpm range.

The factory-tuned engine further evolves.

Based on the user-friendly features of the MAX 21XZ-B, the SPEED 21XZ-B also includes a tungsten-inserted and silicone-filled crankshaft with DLC coating; a lightweight, low-gravity outer head with many cooling holes; a ceramic ball bearing, and more — all the right ingredients to create champions!