Contact Us Form
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.
O.S. SPEED and Adam Drake have collaborated once again to bring you the New Adam Drake B21(AD3) edition engine!
Adam Drake is a multi 1/8th Scale ROAR National Champion who is famous for his extensive knowledge of Nitro racing engines that spans over 25 years. The O.S. Speed B21AD3 engine has several updates from champion Adam Drake. Based off the B21AD2, the new features of the AD3 include a boost bypass processing for the crankcase that increases throttle response, helps the engine run smoother and makes it easier to drive. The new AD3 signature cooling head is anodized black and has blue outer rings that compliments Adam’s unique style.
The AD3 cooling head is 14g lighter and lower profile to help lower the center of gravity and improve driving performance. The inner head uses a new black O-ring to reduce vibration and improve dust resistance. The new backplate has a built-in thrust plate to reduce friction between the connecting rod and the backplate making the engine more durable and will increase engine life. The AD3 comes with two different carburetor restrictors, 6.5mm for Buggy and 7.5mm for Truggy.
You can purchase the AD3 as engine only or the AD3 engine combo set. It’s an excellent choice for both buggy and truggy racing as it provides a linear power band, exceptional fuel mileage and tons of overall power.
Collaboration with O.S. international team driver ADAM DRAKE, a multiple ROAR champion.
By adopting a boost bypass processing for the crankcase, the engine runs more smoothly.
ADAM DRAKE's image color, blue anodized aluminum is applied to the cutting part of the new outer head, and two-color anodized aluminum with new design is used to reduce weight and lower the center of gravity and improve driving performance.
In addition, by adopting a cover plate with a built in thrust plate, wear due to interference between the connecting rod and the cover plate during rotation is reduced and engine life is improved.
The inner head uses an O-ring to reduce vibration and improve dust resistance.
Blue anodized restrictors, 6.5mm for buggy and 7.5mm for truggy comes standard.
The points displayed are points you will earn based on your membership level, and the cost value of the product. Be sure you are Signed In to your account to see the most accurate points you will earn on your purchase.
Points displayed here does not include Bonus Points for select product. If the product is marked with the Bonus Points badge you will also earn the extra "Bonus Points" points listed in this banner in addition to the calculated points displayed
Not yet a Club Member? Click here to learn more about the
Super Saver Club Membership. Standard Membership Free!