Axial .28 Spec 2s
The 28 Spec 2s is a .28 cubic inch big block engine. Replacing the original Spec 1S, the Axial .28 Spec 2S features a larger machined billet aluminum heat-sink head for increased surface area and cooling, adjusted timing for increased RPM (37,500 vs. 36,000), and a three needle slide carburetor that includes 8.0. 8.5, & 9.0mm venturis.
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Standard features include:
- Dual bushing aluminum connecting rod
- True ABC chrome sleeve construction for durability.
- Easy to tune carburetor
This is a direct bolt-in replacement engine for any .21+ engine mount, and will accept most aftermarket shaft drive starting systems.
Engine Specs
Axial .28 Spec 2s |
Size |
.28 cubic inch/4.6cc |
Maximum RPM |
37,500 RPM |
Bore |
18.6mm |
Stroke |
16.9mm |
Construction |
ABC (Aluminum Brass Chrome) |
Heat-sink Head |
Axial Green |
Carburetor |
9.0mm composite slide carburetor (includes optional 8.0 & 8.5mm venturis) |
Carburetor Adjustments |
3 Needle, Flush Settings |
Case |
Black aluminum, rear exhaust |
Connecting Rod |
Dual bushing |
Sleeve |
6+2 port |
Starting system |
Pull starter |
Recommended Glow Plug |
Standard long glow plug |
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Part numbers and EAN Codes
Part # |
EAN |
Description |
Price |
MSRP |
AX0320 |
877493008345 |
.28 Spec 2S Engine (Green) |
$205.00 |
$130.00 |
| AX1116 |
877493008369 |
.28 Spec 2S Heat Sink Head (Green) |
$48.00 |
$35.00 |
| AX1117 |
877493008376 |
.28 Spec 2S Piston/Sleeve Set |
$70.00 |
$50.00 |
| AX1118 |
877493008383 |
.28 Spec 2S Cylinder/Piston/Connecting Rod Set |
$95.00 |
$70.00 |
| AX1119 |
877493008390 |
.28 Spec 2S Crankshaft |
$32.00 |
$25.00 |
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