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About the Yellow Box

Yellow Box Speedometer Recalibration
Acknowledged as the world's best speedo recalibrator due to it's advanced features
and tiny size, the Yellow Box corrects the speedometer and odometer of any
vehicle that uses a hall-effect speed sensor to generate the speedometer signal.

Motorcycles; sportsbikes, Harley Davidson, cruisers, road, trail, trikes,
custom bikes, racing, snowmobiles. Cars and trucks; sportscars, 2WDs,
4WDs, pickup trucks, utes, off-road vehicles, kit cars and custom cars.

Trusted performance and a 10 year warranty!

There are many causes of speedometer error;

Stock vehicle speedos can read 2-10% fast (ie. direct from the manufacturer).

Gearing changes; transmission, differential, changing sprockets, chain, etc.

Wheel size, wheel diameter and/or tyre size changes.

Engine transplant, bike engine in kit cars.

Instrument cluster, dash or speedo faceplate swapping.

Important News

PayPal ordering now available.
Buy now securely with PayPal.

Yellow Box super sale on now, with FREE airmail delivery!
Unbeatable value Yellow Box with splice wiring $99 USD. Or better still save money and time
easy-install Yellow Box with Plug-n-play $108 USD and free shipping! Order Now.

Plug-N-play Yellow Box for motorcycles
No need to splice your bikes wiring simply plug into the speed sensor coupler.
Custom made plug-N-play for your bike.

Thank you for visiting YellR,
Home of the Yellow Box - "The world's best Speedo Recalibrator!"

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