O.S. Speed 21XZ-B Spec II TY

Check out this long stroke nitro mill from O.S. Speed! The 21XZ-B Spec II TY has seen extensive development by Ty Tessmann, and is used in his own race rigs.

O.S. Speed 21XZ-B Spec II TY

A Limited Edition Podium-Placing Mill

The O.S. Speed 21XZ-B Spec II TY is a long-stroke nitro engine designed for 1/8th off road racing. This .21 will be produced in limited quantities, says Hobbico, and is available with or without a T-2090SC tuned pipe. The 21XZ-B Spec II TY will retail for $629.99 with the tuned pipe, and $499.99 without. It's scheduled for release in late August 2017.

Here's what Hobbico has to say about this potent mouse motor: If itís good enough for renowned driver Ty Tessmann, you can be confident installing it in your ride! The Speed 21XZ-B Spec. II Ty 110% long stroke nitro engine continues the O.S. Speed legacy, with improvements that paved the way for Ty to take first place in the Nitro Truggy division at the ROAR Fuel Off-Road National Championships. It comes with a T-2090SC exhaust pipe and manifold that offers lots of tuning options. The Speed 21XZ-B Spec. II Ty 110% is being produced in limited quantities, so get yours today.


  • Features a 7 mm venturi insert that boosts power while reducing fuel consumption.
  • The 4 mm lower cooling head lowers overall center of gravity for improved handling.
  • The included T2090SC exhaust pipe with 90 mm manifold delivers consistent low idling and excellent mid-range power.

CLICK HERE for more info on the all new O.S. Speed 21XZ-B Spec II TY

Last edited by Matt Gunn; Aug 01, 2017 at 07:56 AM..
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