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HOLIDAY HEADQUARTERS

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HOLIDAY DELIVERY DEADLINES

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O.S. Engines

O.S. Engines

Quality and performance has made O.S. the standard in RC engines for over 80 years.

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1153-1248 of 1605 Results

    Standoff 5x25.4mm 1" (4): GT55

    $36.85

    Woodruff Key: 61-91

    $6.45

    Cylinder Liner 91HZ-R Speed 3D

    $121.99

    Piston/Sleeve/Rod set: O.S. SPEED R2106

    $279.99

    Slide Valve 2 (21M)

    $32.99

    Heatsink Head 55HZ.HZ-R

    $138.99

    Pump Unit PD-08: FS-200S-P

    $87.29

    Camshaft Bearing: F 40-120

    $17.16

    Carburetor Body: #10H

    $13.99

    Clearance Sale!

    Carburetor Body: 40L, 55HZ Hyper

    $23.00$76.68

    Clearance Sale!

    Connecting Rod: 21VF/SE

    $21.10

    Connecting Rod with Bearings: GT60

    $97.90

    Crankcase: FS81 Alpha

    $87.19

    Clearance Sale!

    Crankshaft: FT-120 160

    $87.53$199.31

    Clearance Sale!

    Cylinder Head with Valve: FS-91-P

    $135.63

    Exhaust Gasket: 55HZ

    $17.16

    Exhaust Pipe: 120-240

    $21.04

    Insulator, 60K

    $19.05

    Cylinder Head Gasket: 25AX

    $6.49

    Gasket Head: 46AXII

    $6.49

    Exhaust Gasket: GT33

    $7.46

    Clearance Sale!

    Intake Manifold: GF30

    $10.46$34.86

    Clearance Sale!

    Intake Pipe Left: FT-120 240

    $21.10

    Clearance Sale!

    Muffler Assembly Screw: 65AX

    $2.55$8.49

    Clearance Sale!

    Clearance Sale!

    Muffler Assembly Screw F-4050: FS-62V

    $2.85$9.49

    Clearance Sale!

    Clearance Sale!

    Needle Assembly: #60K/C

    $8.88$29.60

    Clearance Sale!

    Cap Screws M3 5x20(10): FL-70

    $9.85

    Shaft Throttle WLA-2: GT55

    $29.60

    Throttle Lever Assembly: GT15HZ

    $9.49

    Rocker Cover Retaining Screws: FS-200S

    $9.85

    Clearance Sale!

    Cover Plate: FS-62V

    $4.73$15.76

    Clearance Sale!

    Crankcase: 25FX

    $44.10

    Clearance Sale!

    Crankshaft: 70SZ-H

    $20.40$67.99

    Clearance Sale!

    Cylinder Head: 55AX

    $34.86

    Clearance Sale!

    Crankshaft: GGT10

    $19.84$66.13

    Clearance Sale!

    Clearance Sale!

    Drive Shaft Fixing Screw: Sirius 7

    $4.43$14.75

    Clearance Sale!

    Drive Washer: FS-62V

    $10.94

    Super Can Filter, Large

    $14.99

    Gasket Set: 25FX

    $7.46

    Head Gasket: 55HZ Hyper

    $6.49

    Intake Manifold Assembly: FT-120 and FT-160

    $44.10

    Intake Manifold: FS-95V

    $34.76

    Muffler Assembly: F-4050 FS-62V

    $52.73

    Needle Assembly: #86, #8H

    $22.04

    Piston Ring: 200 Surpass

    $37.80

    Clearance Sale!

    Pushrod: FS72 Alpha

    $2.96$9.85

    Clearance Sale!

    Prop Washer: 20-40

    $6.49

    Clearance Sale!

    Regulator Seat: 61E-R

    $3.56$11.87

    Clearance Sale!

    Cap Screw Set M2.6x7: 18TZ

    $9.85

    Wave Washer: Sirius 7

    $6.49

    Stator Assembly: 5010-810

    $67.99

    Crankshaft Clamp: 32-46

    $25.44

    Self-Tapping Screw, 2X12 (10)

    $8.58

    Clearance Sale!

    Carburetor: 61B-PII 91HZ-PSII

    $86.14$226.99

    Clearance Sale!

    Carburetor Body: #60J

    $21.10

    Carburetor Body: FS-52

    $29.49

    Carburetor Rotor: #60W, FL70

    $15.99

    Carburetor Screw: FS-20

    $6.49

    Connecting Rod: FS81 Alpha

    $27.29

    Connecting Rod: GGT10

    $48.47

    Header Pipe Spring

    $11.80

    Clearance Sale!

    Carburetor Body: 12F2-B, Speed T1202

    $15.78$52.61

    Clearance Sale!

    Carburetor Retainer: 12TZ Spec II

    $13.78

    Cover Plate: 25XZ

    $21.28

    Clearance Sale!

    Crankshaft: 21VZ-B (P)

    $34.67$115.57

    Clearance Sale!

    Outer Head: 28XZ

    $102.52

    Inner Head: 25XZ

    $57.99

    Outer Head: 21XZ-B Spec 2

    $125.67

    Needle #20E

    $13.78

    Outer Head: O.S. Max .12 TG Version 4

    $74.79

    Joint Spring T-2040

    $13.78

    Carburetor Rotor: 61G, 91HZ-R, Speed 3D

    $52.52

    Inner Head: 12XZ Speed Spec II

    $30.99

    Piston Pin: 15RX

    $6.29

    Clearance Sale!

    Piston Pin: 28XZ

    $3.27$10.90

    Clearance Sale!

    Intake Manifold: GF40

    $21.17

    Rear Bearing: FS-61

    $26.34

    Cam Follower: 91-300

    $22.04

    Camshaft: FS-120 II

    $66.15

    Carburetor Body: #60F

    $37.80

    Carburetor Rotor: 40K, 46AXII

    $33.61

    Connecting Rod: 32SX-H

    $21.10

    Connecting Rod: 40-46

    $22.04

    Crankcase: GT33

    $97.81

    Cover Plate: GT55

    $41.99

    Cylinder Head: .25AX

    $19.99

    Clearance Sale!

    Cylinder Liner: 70SZ-H

    $29.90$99.65

    Clearance Sale!

    Gasket Set: 37SZ-H

    $10.94

    Gasket Set: 140RX

    $8.43

    Gasket Carburetor: #60B

    $6.49

    Gasket Head: 65AX

    $6.49

    Intake Pipe AS-L: FT-120 and FT-160

    $22.30

    Silencer Body: 56 FS

    $44.22

    Muffler Screws #843 (2)

    $6.49

    Muffler Assembly Screw F-5050 FS-95V

    $10.94

    Piston: 55HZ Hyper

    $44.22

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