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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.
The B2105, which has evolved into the fifth generation of the B21 series, is designed to secure power that gives an advantage in harsh off-road racing scenes, and pursues a driving feel that steadily demonstrates performance in any situation. By re-designing the cylinder liner and crankshaft, we have achieved smooth and linear power delivery. Furthermore, the effect of a lighter outer head successfully improves drivability in any situation.
The newly designed cylinder and liner applies 3 ports. The port shape has been changed and the air-fuel mixture flow has been reviewed to achieve more torque from mid to high end.
The modified crankshaft has undergone O.S.SPEED's traditional DLC coating and the internal shape has been revised to improve not only power characteristics but also easier to use than B2104.
Drivability is improved by reducing the weight of the outer head.
Inherited from the well-established B2104 crankcase. The bearing inside the case also uses a proven ceramic bearing.
By adopting a specially treated thrust plate for the cover plate adopted from B2104, wear caused by friction between the rotating connecting rod and the cover plate is reduced and engine life is impiroved.
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.
Not a Club Member? Click Here to learn more about the free Standard Club Membership, or earn points faster by signing up for our Super Saver Club Membership!
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