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Cyclops Tire Pressure Management System (TPMS)

TPMS – It’s the latest thing in tire technology – a wireless system that gives you real-time tire pressure readings AND tire temperature.  Why is that necessary?  Why would you want one?  Isn’t it just another gadget that lends to complexity and cost?  That’s not true…

Imagine riding at highway speeds and the bike picks up a nail.  You won’t know your tire is failing until the bike starts wobbling and weaving.  If you’re lucky you’ll be able to bring it under control. If you’re not lucky… well that’s another story.  Been there, done that.

Imagine riding 2-up, fully loaded, and your rear tire starts to over-heat.  With a Cyclops TPMS you’ll get a warning long before there’s a problem.  I once had a rear tire blow out the entire sidewall for that very reason.  It sounded like a gunshot – the bike started to wobble violently and I went across all lanes as I kept it under control.  Fortunately nobody was coming I was able to stop safely.  My Wife and I were very blessed to walk away from that episode.

Isn’t TPMS just for street bikes?  NO!!!  We use it on our dual-sport bikes and we’re firmly convinced that dirt bikes need it more than a typical highway cruiser.   We ride trails where we’re more likely to pick up a nail or pinch a tube as we jump over a log.  TPMS warns us that we’re losing pressure long before we’ve destroyed the tire or the tube. Because Cyclops TPMS alarms can be customized to our needs, we get an alert when pressure drops below 20 PSI (you can set any pressure for your alerts).  

Photo at right shows my riding buddy Scott holding up a tube from his Africa Twin.  A nail poked the tube and he rode it so long that it actually tore apart inside the tire.  If he’d known the tire was losing air he could’ve stopped to make repairs before the damage was done.

Many new bikes come from the factory with a TPMS system but those CAN’T be retrofitted to other bikes. A Cyclops TPMS will fit on any bike if it has straight valve stems (not for angled stems that come off to one side).

Photo at left shows the display unit mounted on the cockpit of a KTM 1190.  This display was mounted using the sticky pad system, but you can also use the handlebar mounting system shown in the first photo.

The color digital display shows the current tire pressure in either PSI or BAR, for both front and rear tires, PLUS it will show the temperature of each tire in Centigrade.  As you ride, tire pressure will typically rise 4-5 degrees F and temperatures will also increase.  It’s kinda fun to see how much your riding style and speed affects each tire.  On my BMW F800GS at highway speeds I saw a 2 PSI rise in the front tire, and 5 PSI rise in the rear.  

Here’s a photo showing the sensor on the valve stem. It’s about the size of a Reese’s Mini peanut butter cup:

Installation is quick and easy.  Watch our YouTube install video or read below:

On each tire, remove the valve cap, leaving the core in place.  
Screw onto the valve stem the jamb-nut that comes in the kit
Screw onto the valve stem the TPMS sensor (unit marked A goes on front wheel)
Screw up the jamb nut and tighten gently  (this prevents the sensor from coming loose)
Locate a suitable place to mount the display unit, using the handlebar mount or the sticky-pad base
Run the red wire to a SWITCHED 12-volt power supply (dash power socket, fuze panel, or tap a wire)
Run the black wire to ground

Turn on the key and the system will show ZERO pressure in the tires… until you ride a few hundred feet the sensors won’t read any pressure.  Then they start to show the real-time pressure in each tire.

When you turn off your key, the system shuts down.  When you turn it back on the system shows the LAST tire pressure you had when you were riding.   Until you ride a few hundred feet the pressures won’t reset, so don’t rely on the display as part of your pre-flight check.  Your tire might have gone flat during the night.

The sensors weigh 9 grams each.  Will that affect your existing tire balance?  Probably not, but if you feel some buzzing from the tires you’ll need to add 9 grams of wheel weights to the opposite side of the rim.  (we didn’t notice any difference)

There’s a full set of instructions on how to customize your high pressure and low pressure alarms (you can change them at any time).
The system comes from the factory with these alarm values pre-set:
Front wheel high pressure alarm 41 PSI
Front wheel low pressure alarm 26 PSI
Rear wheel high pressure alarm 43 PSI
Rear wheel low pressure alarm 29 PSI
High temperature alarms 68 C (both tires, but they can be changed for each tire)

Kit Specifications:

2 – pressure sensors, waterproof
1 – color display unit 1″x 3/4″ displays in PSI or BAR, waterproof
1 – wiring harness 4′ long
1 – jamb nut wrench
2 – jamb nuts
1 – battery replacement wrench
2 – spare batteries for the sensors
2 – spare valve stem gaskets for sensors