O.S. Engines

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Quality and performance has made O.S. the standard in RC engines for over 80 years.
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1,485-1,508 of 1,605 Results
Crankshaft: T1202 Speed Crankshaft: T1202 Speed
4.8 out of 5 Customer Rating
Crankshaft: T1202 Speed
$37.63 Price reduced from $125.42 to
Clearance Sale! ⓘ
Rocker Arm: FS-62V Rocker Arm: FS-62V
4.1 out of 5 Customer Rating
Rocker Arm: FS-62V
$7.63 Price reduced from $25.44 to
Clearance Sale! ⓘ
Needle Valve Assembly #12FB: 12XZ Speed Needle Valve Assembly #12FB: 12XZ Speed
3.3 out of 5 Customer Rating
Needle Valve Assembly #12FB: 12XZ Speed
$8.19 Price reduced from $27.29 to
Clearance Sale! ⓘ
Cylinder Liner: 70SZ-H Cylinder Liner: 70SZ-H
4 out of 5 Customer Rating
Cylinder Liner: 70SZ-H
$29.90 Price reduced from $99.65 to
Clearance Sale! ⓘ
Venturi #61N: FS72A Venturi #61N: FS72A
4.4 out of 5 Customer Rating
Venturi #61N: FS72A
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
Carburetor Body: #120AX Carburetor Body: #120AX
4.5 out of 5 Customer Rating
Carburetor Body: #120AX
$14.55 Price reduced from $48.51 to
Clearance Sale! ⓘ
Carburetor 40L-R: 55HZ-R Carburetor 40L-R: 55HZ-R
5 out of 5 Customer Rating
Carburetor 40L-R: 55HZ-R
$78.13 Price reduced from $260.43 to
Clearance Sale! ⓘ
Outer Head: O.S. Speed B2104 Outer Head: O.S. Speed B2104
3.1 out of 5 Customer Rating
Outer Head: O.S. Speed B2104
$31.02 Price reduced from $103.41 to
Clearance Sale! ⓘ
Outer Head O.S.Speed B21 Adam Drake II Outer Head O.S.Speed B21 Adam Drake II
4.8 out of 5 Customer Rating
Outer Head O.S.Speed B21 Adam Drake II
$32.39 Price reduced from $107.98 to
Clearance Sale! ⓘ
Crankshaft: 56 FS Crankshaft: 56 FS
3.3 out of 5 Customer Rating
Crankshaft: 56 FS
$18.20 Price reduced from $60.65 to
Clearance Sale! ⓘ
Prop Washer 10-12 Prop Washer 10-12
5 out of 5 Customer Rating
Prop Washer 10-12
$1.95 Price reduced from $6.49 to
Clearance Sale! ⓘ
Exhaust Pipe Nut: FS-120 III Exhaust Pipe Nut: FS-120 III
3.9 out of 5 Customer Rating
Exhaust Pipe Nut: FS-120 III
$6.49
Muffler Body: 120Surpass Muffler Body: 120Surpass
5 out of 5 Customer Rating
Muffler Body: 120Surpass
$40.12
Piston Ring: 160FX Piston Ring: 160FX
4.3 out of 5 Customer Rating
Piston Ring: 160FX
$32.56
Motor Mount: OMA-28 Series Motor Mount: OMA-28 Series
3.9 out of 5 Customer Rating
Motor Mount: OMA-28 Series
$8.99
Connecting Rod: FS-95V Connecting Rod: FS-95V
5 out of 5 Customer Rating
Connecting Rod: FS-95V
$9.13 Price reduced from $30.44 to
Clearance Sale! ⓘ
Piston Ring: 56 FS Piston Ring: 56 FS
3.6 out of 5 Customer Rating
Piston Ring: 56 FS
$8.85 Price reduced from $29.49 to
Clearance Sale! ⓘ
Lock Washer 4mm Lock Washer 4mm
4.8 out of 5 Customer Rating
Lock Washer 4mm
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
Speed Hex Driver Replacement Tip 1.5 Speed Hex Driver Replacement Tip 1.5
4.4 out of 5 Customer Rating
Speed Hex Driver Replacement Tip 1.5
$5.52 Price reduced from $18.39 to
Clearance Sale! ⓘ
Crankcase: 21XZ-GT Speed Crankcase: 21XZ-GT Speed
5 out of 5 Customer Rating
Crankcase: 21XZ-GT Speed
$54.48 Price reduced from $181.59 to
Clearance Sale! ⓘ
M16 In-Cowl Exhaust Header Pipe Invrtd 80D: FS200S M16 In-Cowl Exhaust Header Pipe Invrtd 80D: FS200S
3.7 out of 5 Customer Rating
M16 In-Cowl Exhaust Header Pipe Invrtd 80D: FS200S
$44.22
Exhaust Pipe Assembly: FF-240 Exhaust Pipe Assembly: FF-240
3.3 out of 5 Customer Rating
Exhaust Pipe Assembly: FF-240
$10.50 Price reduced from $22.24 to
Clearance Sale! ⓘ
Pushrod Cover: FS-95V Pushrod Cover: FS-95V
5 out of 5 Customer Rating
Pushrod Cover: FS-95V
$5.15 Price reduced from $17.16 to
Clearance Sale! ⓘ
Carburetor Body: #60LH, 50SX-H Carburetor Body: #60LH, 50SX-H
4.5 out of 5 Customer Rating
Carburetor Body: #60LH, 50SX-H
$14.52 Price reduced from $48.41 to
Clearance Sale! ⓘ
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