OS OSSP-B21 Adam Drake 4 Combo Set

The OS Engines OS Speed B21 Adam Drake 4 Combo Set (SCH-OS1FH01) is the latest collaboration with world-famous OS team driver Adam Drake. The cylinder liner, crankshaft and outer head have been redesigned to Drake’s specification, delivering improved balance, increased torque and more power for enhanced driving performance. This combo set includes a pipe along with key OS Speed accessories to get you started.

Features

• Adam Drake 4 edition with redesigned cylinder liner, crankshaft and outer head
• Tuned to deliver better balance, more torque and more power
• Combo set including pipe and OS Speed accessories

Specifications

• Displacement: 3.49 cc (0.213 cu in)
• Bore: 16.4 mm (0.646 in)
• Stroke: 16.55 mm (0.652 in)
• Output: 2.65 PS / 2.61 hp / 34,000 rpm
• Practical RPM Range: 4,000–42,000 rpm
• Engine Weight: 352 g (12.42 oz)

What’s Included

• Pipe (combo set)
• O.S. SPEED P3 glow plug
• Reducer 6II (blue) AL2
• Reducer 8 mm (blue) AL
• Exhaust seal ring
• Dust cap set 3 mm / 16 mm / 18 mm

Engineered for competitive performance and consistent drivability, the OS Speed B21 Adam Drake 4 offers proven OS quality with refinements from one of the most respected drivers in nitro. Its broad practical RPM range and strong output make it a compelling choice for high-performance applications where torque and reliability matter.