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Payment & Schedules
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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.
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2nd payment = Scheduled 30 days after initial purchase
3rd payment = Scheduled 60 days after initial purchase
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The O.S. SPEED R2104 is a factory tuned engine solely developed for 1/8 racing competition. This new engine boasts 9-port piston liner to improve torque in low-middle power range. It also produces enough power as designed even for high traction tracks. The redesigned crankshaft counter weight enables smooth power transition from low to top. Distance of each fin of the heat sink head is enhanced for better air flow for cooling and better balance. The heat sink head is anodized in both black and red for a high contrast and powerful aesthetic.
This new engine boasts a 9-port piston liner to improve torque in low-middle power range. It produces enough power as designed even for high traction tracks.
Distance between the cooling fins is enhanced for better air flow and better balance. The heat sink head is anodized in two colors: black and red.
A silicon O-ring fit to the inner head prevents dust from coming into the engine.
The redesigned crankshaft counter weight enables smooth power transition from low to top.
The carburetor is 21M2(B), which has been proved to be consistent and reliable for generations (R2101, 2102, 2103)
16.08mm (0.633" )
Nine port liner
3.49 cc (0.213 cu in)
Engine (Only) Weight
OS RP7 turbo, cold heat range
91.2mm (3.6"), total height
94mm (3.7") backplate to of crankshaft
45mm (1.8") at mounting tabs
4,000 - 45,000
17.20mm (0.677" )
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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