![](http://3.bp.blogspot.com/-HKN4aS12iXk/T1jBluySLOI/AAAAAAAAHI4/3SLZ9mnEAx0/s400/TOP-KEEP-21M.jpg)
The new Novarossi made TOP branded KEEP.21M engine has a super long stroke design that is based on the 1/8 on-road engine KEEP-ON.21 (the P/L set is the same and the crankshaft looks to be the same also).
- RPM (Max. power): 42.800 RPM
- Practical RPM Range: 6.000 ~ 44.000 RPM
- Bore x stroke: 15.88mm x 17.60mm
- Sleeve Ports: 9
- Ball Bearings: Front: Steel / Rear: Ceramic
- Crankshaft: 14.5mm / Turbo SG
- Carburetor Type: 9mm / Rotary / Aluminium
- Glowplug type: Turbo C8TGH
- No flywheel is included
More Novarossi info - HERE.
![](http://1.bp.blogspot.com/-FcagCilkyu8/T1jBfgu0qcI/AAAAAAAAHIs/Ey7FDjaQwho/s400/KEEP21M_explode.png)
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