Developing on the on the Speed 21XZ-B the Spec II improves on O.S.s rich history of 1/8th Off Road World Championship winning engines. Racing engines are a constant refinement of design and technology rather than a huge leap. The Speed 21XZ-B is case in point. No one area has been dramatically changed but nearly every area has been subtly developed to make the Speed 21XZ-B Spec II a step forward in performance.
• New lighter crankshaft with DLC coating
• Modified lighter piston and conrod
• Re-designed head with increased cooling
• 21J carburetor
• 6mm and 7 mm carb restrictors
||355g (12.52 oz.)
||0.213 cu.in. (3.49 cc)
||2.61 hp (2.65 ps) @ 34,000 rpm
||4,000 - 42,000
- Brand: OS Engines
- Part No: L-OS12183
- Displacement: 3.5cc (0.21ci)
- Starter: Flywheel Start
Free UK Delivery!
This item is over £100, so qualifies for free standard UK shipping!
We Ship Worldwide!
To see shipping costs simply add the item to your basket and choose your country from the drop down list on the view cart page.
No reviews yet! Write a Review
Write a Review
All reviews are subject to moderation
No questions yet, why not ask one?