Luna Surron Belt Drive Upgrade Kit


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  • Matches the stock gearing of the stock Sur-Ron bike when used with Supermoto kit 
  • Gates Carbon Polychain belt brings the ultimate in long lasting reliability
  • Significantly reduces the noise of the bike to make it quieter and more stealth
  • CNC beautiful made in the USA adds bike porn value to the bike
  • Belt life is up to 75,000 mile life
  • Belt drive requires no maintenance
  • No more messy oily chain making bike easier to store and transport
  • Saves weight over stock chain drive (1.4 pounds lighter)
  • Belt drive is more efficient than a chain drive.

Luna is excited to offer the Sur Ron belt upgrade kit for those who want to upgrade their Sur-Rons to be quieter, more efficient, and cooler looking.

We worked closely with Gates to make this drive happen and happen right. We spent several months testing to ensure the reliability of this system.

We are using the same brand and width of belt as used on the zero motorcycle. The Carbon Gates belt has been an industry leader in reliable and strong belts. We decided on this narrow belt because it is more efficient and quieter than a thicker belt, also it does a better job of kicking out off road debris when the belts are narrow.

Luna CNC’s the sprockets from 6061 billet right here in the usa and finish them with a hard anodized finish (clear or black) for years of beautiful service. 

Weight Savings

The stock chain drive weights in at over 3 pounds

The belt drive kit weights: .65 pounds

So you get a total weight saving of 1.4 pounds. 

Is the Luna Belt kit reliable?

For most riders it is.

For 99 percent of riders the belt kit is the best Sur-Ron upgrade ever. 25,000-75,000 miles with no maintenance and no noise clatter. For 1 percent of riders (pro mx riders) who have hot rodded their Sur-Ron to over 20,000 watts, they may have a problem with snapping belts.  If you don't do serious stunts on your bike like stoppies followed by hard throttle wheelies you will be fine.

What about gravel getting caught and breaking the belt? That is a wide belt problem on a high power bike..we are using a very narrow belt that will  eject pebbles that get lodged in them on a relatively low power surron. We have not seen any belts break in this way and do not expect to see any do this.

Zero electric motorcycles has used Gates Carbon belts on all their bikes for years and there is a good reason.  On a quiet electric motorbike there is no place for chain noise or greasy oily parts.  Zero motorcycles has 5x the power of a Sur-Ron, and uses a very similar system to the Luna Belt kit, so we think the Belt kit should be very reliable. 

Luna is offering Gates Replacement belts at the discounted price of $45 for buyers of this kit who happen to break a belt... but we do expect the belt to last the life of the bike. 


Installation will take a mechanical person an hour or two to do.  It is not a hard kit to install but it is also not very easy. We recommend this kit to people who are mechanically inclined.  We provide all parts you need and a special tool required to loosed the swing arm nuts.  Luna will be releasing a detailed install video shortly to give step by step direction on how to install this kit. In the meantime here is a document how to do it.

The belt is a 8mm pitch, 1280mm Gates Polychain Carbon, the proper tension for a stock Sur-Ron X is 90-125hz (100hz is Ideal).  If your bike is modified please refer to the Gates calculator to tune the belt to your power level.

Kit includes the following

  • Gates Carbon Belt Polychain
  • CNC Front and Rear Sprocket made from 6061 aluminum
  • Luna Swing arm removing tool
  • Pedal Band-Aid Plate
Recommended Usage and Notes

This kit is primarily for use and geared for the Super Moto Kit.  Using the belt kit with stock wheels you would be dropping the gearing from 48T to 42T, which would alter efficiency, torque and top speed.  This kit is not for you if you like to do jumps or heavy trail riding, as the belt can stress without resistance while in the air. This kit does best on motocross asphalt courses, or light trail riding. 

Speedometer : Speedo is based on motor RPM, so changing to a belt drive will make the reading inaccurate (unless you pair with the super moto kit). The belt kit with stock tires will under report speed.