CRF250L Supermoto Conversion Guide
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The beauty of dual sport bikes like the Honda CRF250L is that it can be two bikes in one... with the stock knobbies, you have a capable off-road bike, and by adding a set of 17" supermoto wheels and tires, you can also have a capable corner carver for the street.

Converting a Honda CRF250L to a supermoto is pretty straightforward. All you really need is a set of 17" supermoto wheels like the ones we use from Warp 9 Racing, and then some sticky supermoto tires like the Bridgestones or Dunlops we use (see details below). There are a few things you need to do to fit the smaller 17" wheels/tires. Up front, in order to clear the smaller 17" supermoto tire, you have to re-route the front brake line to the outside of the fork leg and also trim the plastic lower fork protectors so they clear the front tire. You also need to source a shorter kick stand.... we just ordered an extra OEM kickstand, had it cut down by about an inch, and the foot welded back on.

As for a rear sprocket, the gearing you choose is a personal preference type of thing, but on our bike we went with a 42T rear sprocket and left the stock 14T front on. I've heard some of the SM guys are doing 15T front and 42T rear, which seems to work nicely with the smaller 17" SM tires.

Honda CRF250L Supermoto Wheels:
We use Warp 9 Supermoto wheels on all of our supermoto conversions. Their wheels are available in a lot of different color combinations, and they will include a rear sprocket as well as front/rear brake rotors.
  • CRF250L Warp 9 Supermoto Wheels

    Honda CRF250L Supermoto Tires And Tubes:
    For the CRF250L we like the following tires from Dunlop, Bridgestone, Pirelli and Continental. Both are available in a 110/70-17 front tire, which is what is recommended for the CRF250L. Some will run a 120/70-17 front, but we've heard of rubbing issues on the front forks with that 120 tire, so we stick with 110's on our bike.
  • Dunlop Q3 Plus Front Tire (110/70-17)
  • Dunlop Q3 Plus Rear Tire (140/70-17 or 150/60-17)
  • Pirelli Diablo Rosso III Front Tire (110/70-17)
  • Pirelli Diablo Rosso III Rear Tire (150/60-17 or 140/70-17)
  • Continental ContiAttack SM Front Tire (110/70-17)
  • Continental ContiAttack SM Rear Tire (150/60-17 or 140/70-17)
  • Bridgestone S20 Evo Hypersport Front Tire (110/70-17)
  • Bridgestone S20 Evo Hypersport Rear Tire (140/70-17 or 150/60-17)
  • Michelin Front and Rear Inner Tubes

    Other Things To Consider:
    Changing to 17" tires will throw off your speedometer/odometer, so we recommend recalibrating it with this nifty product from 12oClockLabs...
  • 12oClockLabs SpeedoDRD Speedometer Calibrator

  • How To Convert your Honda CRF250L to a Supermoto

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