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Speed R2103 Engine
  • Overview
  • Specs
  • Reviews
  • Parts & Accessories
  • Manuals & Support
Bore: 0.63 in (16.1 mm)
Carb Type: O.S. 21M2(B) slide valve w/8.5mm reducer
Crankshaft Threads: UNF1/4-28
Cylinders: Single
Displacement: 0.213 cu in (3.49 cc)
HP: 2.8 PS, 2.76 HP @ 33,000 rpm
Height: 3.58 in (91 mm)
Length: 3.70 in (94 mm)
Plug Type: T-RP7 Turbo Glow Plug
RPM Range: 4,000 - 45,000 rpm
Recommended Fuel: 10-30% nitro content fuel
Stroke: 0.68 in (17.2 mm)
Total Weight: 12.0 oz (340 g)
Type: .21 2-stroke glow powered 1/8 scale on-road engine
Width: 1.77 in (45 mm) between mounting tabs

Parts Listing

Needle Holder 21M: 21XZ-R
$13.99  $12.99
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O-Ring Large: FS90IIS
$4.49
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Set Screw #2D #4BK-#5B
$4.49
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Carburetor Body: 21M(B), 21XZ-R Speed
$99.99  $89.99
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Cylinder Piston Assembly: R2103 Speed
$199.99  $179.99
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Universal Nipple: #15, 21M
$8.49
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Carburetor 21M2-B: Speed R2101
$159.99  $139.99
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Mixture Control Valve 21M
$17.99  $15.99
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Rear Bearing: 21VZ, 30VG
$64.99  $57.99
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Crankshaft: R2103 Speed
$219.99  $189.99
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Metering Needle Assembly 21M2(B) Speed: R2101
$16.99  $15.99
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Cap Screw Set M2.6x7: 18TZ
$7.49
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Cover Plate: R2101 Speed
$20.99  $18.99
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Inner Head: R2101 Speed
$54.99  $47.99
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Carburetor Retainer: 30VG
$11.99  $10.99
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Piston Pin: 21XZ-R
$7.49
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Dust Cover: 30VG
$8.99
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Needle 21M: 21XZ-R
$11.99  $10.99
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O-Ring IV PRC #6H Rubber
$4.49
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Carburetor Retaining Screws: 2.6x18mm (10)
$7.49
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Outer Cylinder Head: R2103 Speed
$99.99  $89.99
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Gasket: #3A2CBD
$4.49
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O-Ring Small #2K #2SB
$4.49
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RP7 Turbo Glow Plug Cold On-Road
$16.99  $15.99
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Piston Pin Retainers: Speed T1202 (6)
$7.99
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Exhaust Gasket: 21RZ
$11.99  $10.99
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O-Ring Metal Valve: 120Surpass
$4.49
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Dust Cap Set: 12-30 Class
$7.49
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Cylinder Head Screws: 56 FS
$7.49
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Ball Link #3 20K: 21VZ-R
$14.99  $13.99
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Head Gasket: 0.1, 0.15, R2101 Speed
$7.99
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Cover Plate Gasket: 35AX
$7.99
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Connecting Rod: R2102, Speed 21XZ-GT
$54.99  $47.99
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Gasket Carburetor: 61-108
$4.49
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Slide Valve 21M
$32.99  $29.99
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Slide Valve Stop Screw #21J
$8.99
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Cylinder Piston Rod Rebuild Kit: R2103 Speed
$259.99  $229.99
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Optional Accessories

12V DC Nitro Engine Heater
$59.99  $39.99
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T-2080 Manifold Assembly
$69.99  $61.99
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T-2080 Silencer Clamp
$11.99  $10.99
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