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Old 06-09-2006, 08:17 PM
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Join Date: Jan 2006
Location: Where Racing Was Fun
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Arrow 06 FR21 Off-Road Racing Engine

06 FR21 Off-Road Racing Engine

High Performance. Quality. Affordable. When setting out to develop the 2006 FR21, our main goals were to build a high performance engine capable of competing at the highest levels of competition, that exceeds the highest quality standards, and is affordable. Joining forces with one of the most reputable Italian engine manufacturers, we met our goals with this latest addition to our nitro engine line. The 2006 FR21 is completely new and shares no parts with its predecessors. The 2006 FR21 was specifically developed for serious off-road racing and flat out rips in both 1/8 buggy and truggy classes.

NOTE: This engine was developed for racing purposes and is not recommended for backyard use. This engine is recommended only for experienced racers and/or under the close supervision of an experienced racer.


Italian based quality and performance.
True ABC construction features pro ported sleeve with special outside channels to increase and accelerate fuel delivery to the ports; special cylinder chroming system achieves maximum quality and hardness; machined piston made of special aluminum alloy for maximum performance and cylinder/piston logevity.
High performance connecting rod features high strength design machined from solid billet aluminum alloy, double bushings, and 3 oil passage holes for maximum lubrication.
High performance crank features pro porting and modifications for maximum fuel delivery and efficiency.
High performance crankcase made using special Italian engine casting techniques which produce a highly stable casting that will not distort from heat.
High performance heat sink head features strong 6 bolt configuration, 11 fins for maximum cooling, and replaceable combustion chamber button.
High performance 8mm carburetor features aluminum construction, 2-needle design, and adjustable swivel fuel inlet.
High performance rear plate features o-ring seal, and machined passages for maximum fuel delivery.
High performance bearings (sealed front bearing).
Standard head button (optional turbo head button available - part number FAN00208).
Includes extra set of head shims for fine tuning, glow plug, exhaust seal, crankshaft collet, and allen wrench.
Unmatched customer support.
All spare parts available separately; Click here for parts menu


Displacement: .21ci / 3.5cc
Bore: 16.4mm
Stroke: 16.4mm
Horsepower: Due to the deception and inaccuracy of other brands we do not provide this spec. We are considering providing X-Dyno ratings if/when it becomes the industry standard. This engine has more than enough HP for any off-road racing situation. For comparison purposes only, other brands are rating their comparable engines in the 2.60 to 3.05 HP range.
Typical RPM Range: 3,000-38,000
Ports: 7 (6 transfer + 1 exhaust)
Carburetor: 8mm aluminum slide / 2 needle
Crank: Standard SG


1/8 Off-Road Buggy
Off-Road Truggy
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