ISON 21GT Tuned Long Stroke .21 Rally Engine (Turbo) (Steel) by Novarossi

Store Availability Learn More


Frederick, MD

Unavailable In Store - Check Others
Low Price: $264.99
Add To Cart Add to Wish List
Usually ships in 24 hours
FREE Shipping Eligible!
This item is eligible for Super Saver Shipping Learn More

This product was added to our catalog on March 11, 2014.

This is the Novarossi ISON .21GT TUNED 5 Port .21 Long Stroke Rally Engine. This engine features a silicone ramped and tungsten slugged "Tuned" crankshaft for incredible acceleration.


  • Conrod: The R7 conrod is made from a super light aluminum which has been checked ultrasonic. The specific form of the R7 creates little turbulence inside the engine while running.
  • Sleeve: The sleeve has 5 transfer ports and is made from hard chromed brass (true ABC construction.
  • Crankshaft: The crankshaft has been ground to increase the mixture flow and has a special shape to reduce turbulence inside the crankcase. The balancing is done by 2 inserts made of tungsten alloy and the inlet has a silicone filling to reduce the weight of the crankshaft for improved acceleration.
  • Glowplug: The glowplug of the engine is a Turbo type glowplug. Turbo glowplugs have a different shape than Standard glowplugs and therefore are not interchangeable with engines that use Standard glowplugs.

Recommended Tuned Pipes: NVR51009, NVR51010, NVR51011
Recommended Tuned Manifolds: NVR41015, NVR41016, NVR41017

Recommended Glow Plug:

  • C7TGF: For ambient temperature - 32F/41F (0C/5C)
  • C8TGH: For ambient temperature - 41F/104F (5C/40C)

Max Power: 38,500 RPM
Practical Range: 6,000 ~ 44,000 RPM
Bore x Stroke: 16.26x16.80mm
Transfer Ports: 5
Ball Bearings Front: Steel
Ball Bearings Rear: Steel
Crankshaft Type: 14mm - TURBO 'TUNED'
Carburetor Type: 9mm Slide
Carburetor Material: Aluminum
Glowplug Type: Turbo - C6TGF
Exhaust Position: Rear
Fuel Type: Advise; 25% Nitro
Weight: 367g