Displacement: .213 cu in (3.49 cc)
Bore: .641 in (16.27 mm)
Stroke: .661 in (16.8 mm)
Practical RPM: 3,000-41,500
Power Output: 2.7 hp @ 34,000 rpm
Weight: 12.77 oz (362 g)
Includes: 2282 carburetor, 6 mm and 7 mm carb restrictors, P3 glow plug, exhaust seal and dust cap set
Requires: glow fuel, muffler, tuned pipe and manifold

Specifications:
Bore: 0.65 in (16.4 mm)    
Crankshaft Threads: UNF 1/4-28    
Cylinders: Single    
Displacement: 0.211 cu in (3.49 cc)    
HP: 2.61 hp @ 34,000 rpm    
Height: 3.32 in (84.3 mm)    
Length: 3.70 in (94 mm)   

Total Weight: 12.6 oz (356 g)    
Width: 1.77 in (45 mm)

Includes: P3 turbo plug, 5.8mm carb reducer installed, exhaust ring and tuned pipe set T-2090SC

Displacement: 0.213 cu in (3.49 cc)
Bore: 0.641 in (16.27 mm)
Stroke: 0.661 in (16.80 mm)
Practical rpm: 4,000-42,000
Power Output: 2.61 hp/2.65 ps @ 34,000 rpm
Weight: 12.45 oz (353 g)
Includes: Turbo P-3 plug

Displacement: 0.213 cu in (3.49 cc)
Bore: 0.641 in (16.27 mm)
Stroke: 0.661 in (16.80 mm)
Practical rpm: 4,000-42,000
Power Output: 2.61 hp/2.65 ps @ 34,000 rpm
Weight: 12.45 oz (353 g)

Includes: Turbo P-3 plug and O.S. T-2060SC Tuned Pipe With Manifold

Displacement: 0.213 cu in (3.49 cc)
Bore: 0.633 in (16.08 mm)
Stroke: 0.677 in (17.2 mm)
RPM Range: 4,000-45,000
Output: 2.76 hp @ 33,000 rpm
Weight: 11.99 oz (340 g)
Includes: Exhaust seal ring, tapered collet and three carb dust seal caps
Require: Glow fuel with 10-30% nitromethane content (20% recommended for break-in), T-2080SC exhaust pipe.

Displacement: 0.213 cu in (3.49 cc)
Bore: 0.633 in (16.08 mm)
Stroke: 0.677 in (17.2 mm)
RPM Range: 4,000-45,000
Output: 2.76 hp @ 33,000 rpm
Weight: 11.99 oz (340 g)
Includes: Exhaust seal ring, tapered collet and three carb dust seal caps and T-2080SC exhaust pipe
Require: Glow fuel with 10-30% nitromethane content (20% recommended for break-in)

Technical specifications:
- displacement 3.49cc
- bore 16.27mm
- stroke 16.80mm
- rpm 4000-42000 rpm
- max output 2.64hp/34000 rpm
- weight 347gr
- recommended exhaust T2100SC
- port 3-port

Technical specifications:
- displacement 3.49cc
- bore 16.27mm
- stroke 16.80mm
- rpm 4000-42000 rpm
- max output 2.64hp/34000 rpm
- weight 347gr
- recommended exhaust T2100SC
- port 3-port

Includes the OS T2100SC exhaust system

 Technical specifications:
- displacement 3.49cc
- bore 16.27mm
- stroke 16.80mm
- rpm 4000-42000 rpm
- max output 2.64hp/34000 rpm
- weight 354gr
- exhaust T2100SC
- port 5-port

Includes: Turbo P-3 plug
Requires: glow fuel, tuned pipe and manifold

 Technical specifications:
- displacement 3.49cc
- bore 16.27mm
- stroke 16.80mm
- rpm 4000-42000 rpm
- max output 2.64hp/34000 rpm
- weight 354gr
- exhaust T2100SC
- port 5-port

Includes: OS T2100SC exhaust system

 Technical specifications:
- displacement 2.10cc
- bore 13.67mm
- stroke 14.30mm
- rpm 5000-45000 rpm
- max output 1.73hp/35000 rpm
- weight 230gr

Requires: glow fuel, tuned pipe and manifold

 Technical specifications:
- Displacement: 2.10 cc / 0.128 cu.in.
- Bore: 13.67 mm / 0.538.
- Stroke: 14.3 mm / 0.563 in
- Practical range RPM: 5,000 – 45,000 rpm.
- Power: 1,75 ps / 1,73 hp / 35,000 rpm
- Weight: 230 g / 8.11 oz
- Exhaust: T-1070SC exhaust and M1006SC manifold

Requires: glow fuel, tuned pipe and manifold

O.S. Speed R21GT engine for the 1/8th GT on-road classes. Designed with the forthcoming 1/8th GT IFMAR World Championship in mind, the engine builds on the proven R2101 crankcase which was refined as was the 5+3 ports liner and piston to meet current IFMAR rules.

Tech specifications:
- Displacement: 3.49 cc
- Bore: 16.08mm
- Stroke: 17.20mm
- Intake ports: 5-port
- Exhaust port: 3-port

Combo of the O.S. Speed R21GT engine with the T-2060SC + MB01-70 (M2003SC) exhaust system for the 1/8th GT on-road classes.

Designed with the forthcoming 1/8th GT IFMAR World Championship in mind, the engine builds on the proven R2101 crankcase which was refined as was the 5+3 ports liner and piston to meet current IFMAR rules.

Tech specifications:
- Displacement: 3.49 cc
- Bore: 16.08mm
- Stroke: 17.20mm
- Intake ports: 5-port
- Exhaust port: 3-port

This is the competition nitro engine OS Speed B21 ADAM DRAKE EDITION II realized with the collaboration of Adam Drake.

Features:
- Designed according to Adam Drake\'s advice and taste.
-  New design cylinder liner with new porting.
- New design crankshaft with double tungsten counterweight
- New bore x stroke (see the attached specifications)
- Carburetor reducers are 6.5mm and 8.0mm to suit both powerful drive and fuel economy drive OS SPEED 5. P3 GOLD plug is used for more consistent idling.

Combo nitro engine OS Speed B21 ADAM DRAKE EDITION II with T-21000SC pipe realized with the collaboration of Adam Drake.

Features:
- Designed according to Adam Drake\'s advice and taste.
-  New design cylinder liner with new porting.
- New design crankshaft with double tungsten counterweight
- New bore x stroke (see the attached specifications)
- Carburetor reducers are 6.5mm and 8.0mm to suit both powerful drive and fuel economy drive OS SPEED 5. P3 GOLD plug is used for more consistent idling.

O.S. SPEED T1204 is the successor of T1203 which is the World Champion engine in 2018. T1204 has more toque in low-middle range with better performance. Two tungsten weights are embedded in the counterweight of newly designed crankshaft, which helps powerful performance in middle range.

Specifications:
Displacement 2.1cc
Bore: 13.67mm
Stroke: 14.30mm
Output 1.75ps - 1.73hp - 35.000r.p.m.
Practical rpm range: 5,000〜45,000r.p.m.
Weight:233g