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The O.S. Speed 21XZ-B Spec II "Ty 110%" .21 Engine was developed in collaboration with renowned factory driver Ty Tessmann. The Speed 21XZ-B Spec. II Ty 110% features improvements that paved the way for Ty to take first place in the Nitro Truggy division at the ROAR Fuel Off-Road National Championships, so you can be confident that it makes all the power you need! This model 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 before they are gone!
7mm venturi insert that boosts power while reducing fuel consumption.
4mm 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
This product was added to our catalog on October 6, 2017