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Ofna - OFNG0151 OFN53211 53211 023705532119 0023705532119
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Ofna Hyper .21 w/Pull Start
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Ofna Hyper .21 w/Pull Start
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Tech Notes
This is a .21 Turbo/Hyper with pull start Ofna engine.
This engine is used to power 1/8th scale R/C kits.
*NOTE* Some kits require extra items to install and operate
this engine. Check kit requirements for these parts.


Oversized flow-through Black anodized cylinder head
ABC construction (Aluminum piston with a chromed brass cylinder)
Rear exhaust
Ball Bearing-supported crankshaft
Slide Valve rotatable Carburetor
Needle valve adjusted by a screwdriver
Pilot Shaft


One .21 Ofna Hyper engine w/Slide Valve Carburetor
One Brass collet (these hold flywheel in place)
One Header with seal, clamp and spring
One Running and parts information sheets
One Hyper .21 Decal sheet


Displacement: 3.49cc (.21 cubic inches)
Bore: 16.26mm Stroke: 16.8mm
Weight: 350g
Length: 85mm (3.355") from front of front bearing to back of pull start.
Width: 31mm ( 1.21") the width neglecting the mounting flanges
36mm (1.43") distance across crankcase measured between the centers
Height: 113mm (4.428")
(contact Ofna for more technical information).


-Fuel with 5%-30% Nitromethane (20% is recommended) and a lubricant
content of 18% or more
-Glow plug (turbo type without idle bar)


– If you need more information, use these Ofna resources –
Email: help@ofna.com
Web Site: http://www.ofna.com/
Phone: 949-586-2910
  Postal Address:
IRVINE, CA 92618

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Accessories Needed

Accessories for the Ofna Hyper .21 w/Pull Start

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  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
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 LXVHJ3 O.S. P5 Turbo Glow Very Hot Plug Off-Road
Qty Discount Available
7.99   In Stock
 LXRXC9 Tower Hobbies TOWER Power 20% Car Fuel Quart
Qty Discount Available
8.99   In Stock
Subtotal for this Group of Accessories: 16.98  
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