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O.S. Engine 12XZ Speed Spec III

O.S. Engine 12XZ Speed Spec III

This new engine is packed with features like a new cylinder liner and piston for more torque and fuel mileage, plus a redesigned head button for better performance and improved acceleration. Check out all the details in the press release below: O.S. engineers have taken superior Speed Spec performance to the next level! In addition […]
O.S. Engine 21XZ-R Engines

O.S. Engine 21XZ-R Engines

O.S. introduces two new 21XZ-R engines designed to overthrow the status quo in 1/8 scale on-road racing! Both can run a full 10-minute heat on just one tank of fuel, while most other engines need two tanks. That puts the 21XZ-R driver a pit stop ahead of the pack — and in sole possession of […]

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O.S. Engine RP8 Turbo Glow Plugs

O.S. Engine RP8 Turbo Glow Plugs

O.S.® Engine RP8 Turbo Glow Plugs – Cold are ready to keep your .21VZ-R or 12TR engine cool while keeping your performance hot! Compatible with 25% or higher nitro fuel, the RP8 Turbo Glow Plugs are perfect for serious on-road competitors! OSMG2715 – RP8 Turbo Glow Plug-Cold – $14.99 O.S. RP8 plugs are available now.
O.S. Engines: 21XZ-B/Speed, 65AX, and 25FX

O.S. Engines: 21XZ-B/Speed, 65AX, and 25FX

New from O.S. Engines: 21XZ-B & 21XZ-B Speed The 21XZ-B engines represent the next level in high-performance engine technology. The 21XZ-B boasts improved fuel mileage, plus a long stroke for superior torque A 21J2 three-needle carb includes a 7 mm restrictor The 21XZ-B Speed has been tuned for championship-caliber performance, with a race-proven 3-port sleeve […]

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O.S. Engines Speed 21XZ-B engine

O.S. Engines Speed 21XZ-B engine

New from O.S. Engines: Top drivers including Mark Pavidis and Atsushi Hara can vouch for the victory-taking technology of O.S.® Speed engines. Both have stood in the IFMAR Off-Road World Championship winner’s circle as a result of its powerful edge. Now another O.S. engine offers you the same advantage! The O.S. Speed 21XZ-B engine has […]
O.S. Engines 12XZ Speed Spec II and 30 VG (P)

O.S. Engines 12XZ Speed Spec II and 30 VG (P)

New from O.S. Engines: By redesigning the 12XZ (P) Speed Tuned Spec II and 30VG (P) ABL, O. S. Engines® raises the bar for 1/10 and 1/8 scale racing engines. While the enhancements appear to be subtle, they can make all the difference when it comes to taking the checkered flag! 12 XZ (P) Speed […]

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Gear Guide 2019
O.S. Engines GT55

O.S. Engines GT55

New from O.S. Engines : Introducing the first O.S. gas engine—designed especially for R/C! It’s similar in appearance to other O.S. 2-cycle engines, with a large number of extra-deep and -thin cooling fins on the crankcase and head. A unique 1-piece crankcase design eliminates gaskets and enhances strength and precision. A unique front-mounted carb, however, […]
O.S. Engines .21 VZ-B V-Spec Limited Edition

O.S. Engines .21 VZ-B V-Spec Limited Edition

This O.S. Engines .21 VZ-B V-Spec Limited Edition engine have a final production run of 300 units. To commemorate this it comes with a specially modified cooling head with sixteen machined holes for lighter weight and more efficient cooling, will be anodized in gold, and the top of the head will feature custom graphics to signify all four IFMAR World Championships.

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O.S. Engine .12XZ and .21 V-Spec II Speed Cylinder Rebuild Kits

O.S. Engine .12XZ and .21 V-Spec II Speed Cylinder Rebuild Kits

New from O.S. Engines: Cylinder Rebuild Kit 12XZ SP A convenient one package kit for racers! The O. S. .12XZ Speed rebuild kit features a hardened chrome-plated cylinder liner for high durability and long life. The machined aluminum piston features parallel rings that trap fuel oils and use them as a seal to enhance compression […]
O.S. ENGINES SPEED TUNED .21 VZ-B V-SPEC  AL ENGINE

O.S. ENGINES SPEED TUNED .21 VZ-B V-SPEC AL ENGINE

A new version of a popular powerhouse! An aluminum heat sink head combined with special factory tuning makes this a more efficiently cooled .21 VZ-B V-Spec competition engine! The specially coated crankshaft features a precision ceramic bearing that greatly reduces friction – plus a Tungsten weight for added balance. A double adjustment carb allows for […]

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O.S. ENGINES .21 VX-B (P) Engine

O.S. ENGINES .21 VX-B (P) Engine

O.S.'s latest engine is a new and improved version of the mill that powered Greg Degani to victory at the IFMAR 1/8-Scale Worlds. The VZ-B (P) has a newly developed 20L carburetor that features twin low-range needles for extra precision, and the carb works with the metering valve and nozzle to increase combustion efficiency. Its other features include: three ports; a larger-diameter crankshaft to create higher torque; a larger heat-sink head to improve cooling; and both the piston and conrod have been machined to make them more precise and lighter. The .21 VZ-B(P) is a powerhouse (our Nitro magazine editor Kevin Hetmanski can attest to this after running it in his Kyosho buggy). According to O.S., the engine puts out a whopping 2.4hp at 32,000rpm—more than enough power to make any buggy rip!
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