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Let us take some of the stress out of holiday gift buying this season by giving you more time to qualify for price adjustments. Price adjustments on purchases are available 10/8/2022 until 12/25/22. If an item you buy has a price reduction before Christmas, we will credit the difference upon request, so you can shop confidently knowing your price is guaranteed.
All credits will be issued as Loyalty Club Points on your Tower Hobbies account.
To increase torque on high-grip track surfaces, a newly designed 9-port sleeve is adopted. O.S. SPEED's traditional DLC coated crankshaft delivers linear power from low to top by changing the counter balance. The outer head has been mirror finish and by clear coat from the conventional color to a silver head base has been adopted. By adopting a thrust plate made out of steel, wear due to interference between the connecting rod and the cover plate during rotation is reduced and engine life is improved.
Adopting the latest design to most part of the engine, it is finished with content suitable for the flagship of the O.S. SPEED on-road engine.
To increase torque, the sleeve adopts newly designed ports.
By redesigning of the crankshaft’s counter weight, power delivery from low to top is improved.
Polished finish is applied to the silver head base from the conventional color.
A new mold was adopted for the crankcase, and the O.S. SPEED logo was applied to the exterior design.
Based on 21M, which already had a good reputation, by changing the needle O-ring from 1 piece to 2 pieces to prevent the needle adjustment from changing.
By adopting a thrust plate made out of steel, wear due to friction between the connecting rod and the cover plate during rotation is reduced and engine durability is improved.
The points displayed will be earned based on your membership level, and the cost value of the product. Be sure you Sign In to your account to see the most accurate points estimate for your purchase. Points are awarded and available for use once your order entire has shipped complete.
Points displayed here do not include bonus points for select products. If the product is marked with the Bonus Points Badge below, you will earn the extra bonus points listed in the banner in addition to the calculated points displayed.
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