Step 1:Create a registered account on towerhobbies.com Step 2: Shop and build your cart with your favorite In Stock RC products Step 3: Choose “Easy Pay” payment option to split your payments Step 4: Submit your order!
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Customer must have a registered account in good standing on towerhobbies.com
Minimum order value of $100 of qualifying In Stock items (before tax & shipping).
Total available credit limit = $500. Minimum financing amount = $50.
Available for eligible In Stock merchandise only
Backorder and Preorder items on your order will charge in full when they ship. Easy Pay payments and credit will only be calculated for qualifying In Stock merchandise on the order.
Other charges, including but not limited to shipping and handling, taxes, ineligible items, will be billed on your first payment. Payments for Easy Pay ineligible items will be due at time of order.
Easy Pay is only available by using a valid Credit Card. Paypal cannot be used with Easy Pay.
Payment & Schedules
Easy Pay payments will be split in either two, or three payments. The first payment is charged to your credit card when your order is invoiced. Additional payments are then billed to the credit card every 30 days after the first payment, until all payments have been made.
For order values $100.00-$299.99, Payments will be split into two payments. For order values >$300, payments will be split into three payments.
1st payment = Time of purchase (includes tax, shipping, and ineligible items)
2nd payment = Scheduled 30 days after initial purchase
3rd payment = Scheduled 60 days after initial purchase
Payments will be split equally as credit limit allows, and scheduled payment values will be limited by available remaining credit limit.
*View and manage your Easy Pay payment methods, schedule and view available credit limit within the “Easy Pay” section of My Account.
*Easy Pay financing option is available at Horizon’s sole discretion and terms are subject to change.
Club racers rejoice! The R21 engine delivers an unbeatable blend of power and value for 1/8 on-road racing. Its crankshaft and piston/liner are designed with premium performance and easy maintenance in mind, which makes it an ideal choice for beginners. Best of all, they can be upgraded with O.S. Speed parts when you want to step up to Spec-class competition. High performance. Low price. That’s what you can expect from the R21, only from O.S.
The perfect power plant for rookies and club racers!
Upgradable, newly developed crankshaft and piston/liner lets you transform the R21 into a Spec-class performer.
RP7 Turbo glow plug.
8.5 mm carb reducer.
Speed flywheel collet.
Exhaust seal ring.
Dust cap set.
0.64 in (16.3 mm)
0.213 cu in (3.49 cc)
Turbo RP7 glow plug
3.6 in (91.2mm) from backplate to front bearing
2.5" (64.5 mm)
1.8 in (45 mm) at mounting tabs
4,000 - 44,000 rpm
0.67 in (17.2 mm)
12.35 oz (350 g)
Club Points Information
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.
200 points = $5 Discount
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
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