I purchased the optional Moto Kit from Luna in 2018. I like the option to change the personality of this fantastic bike from dirt to street. For $419.95 excluding tax and shipping I felt it to be a crazy good deal. It’s supplied with tires, rims, and spacers for the front rim, a rear sprocket and 203mm brake rotors on both wheels. They also include a chain to fit the 42t sprocket that comes with the set. Having purchased motorcycles and their associated parts my entire life, I estimate that this ‘ready to go kit’ would have cost me around 700 bucks if I assembled it myself. Not to mention the time it would take me to research where/what/how to source all of the stuff. So I made the plunge since it was a no brainer….
It’s pretty straightforward with a few caveats which will depend on how your Sur Ron is set up. On mine I have the pedal kit installed and for many personal reasons I love it. BUT the chain supplied with the Moto Kit does NOT contemplate having a pedal kit installed. It’s short by about two 420 chain links. The reality is no one but I will probably want the pedal kit installed with the Moto Kit. But for any other oddball who have the pedals, be forewarned that the supplied chain won’t fit. I didn’t try the stock chain to see if it would fit, but it may…..hum.
The rims size for both front and rear are 17” compared to the 19” stockers. It makes the profile of the bike shorter. Because of that the kickstand props the bike much more vertical than with the stock 19ers. Just keep that in mind. The kickstand still works well, but you’ll need to be mindful of where/what /how you park the bike because of the increase in vertical angle.
The other factor to be aware of is the tires come deflated, unlike the knobby tires that came on my bike. I measured tire pressure of 5 PSI for both the front and rear tires before I installed them onto the bike. In the package with the chain are two spacers for the front rim/tire combination. Others have said theirs came zip tied to the rim. For the rear rim/tire you simply reuse the stock rear wheel spacers.
My front tire was manufactured in March 2017 according to the tire’s date of manufacture mark.
Inflation recommendation for the front is 32 PSI measured while the tire is cold.
My rear tire was manufactured in August 2017
Recommended tire pressure is 36 PSI measured while the tire is cold.
Something I noticed after installing the rear rim/tire is the brake line is way too close to the tire/rim. I believe this is due to the smaller diameter of the rim over the stock 19ers.
Resolving this is very simple, just use a zip tie to attach the brake line to the swing arm and it’s all sorted.
Riding and Performance
Once everything was installed I took my bike out for a test ride. Because my former team mates and I installed racing slicks and new brake pads every race, I’m familiar with how to bed in brake pads and new rubber. BE VERY CAREFUL when you go out for your first run. The pads on your bike are bedded for the 19 inch discs and need to be re bedded to the new Moto rotors. Lightly press on each brake as you ride. Heating pad/disc evenly is important to obtain a great bite and feel on brakes. Also the whole thing you see where people are ‘weaving ‘back and forth does not break in tires. Accelerating and braking is what does. Don’t go full bore and then slam on the brakes. Get up to about 30 MPH, then gently squeeze the brakes which will heat up the carcass of the tire to remove any molding release agents. Keep doing that for about 20 repetitions and remember that the edges of your tires must be warmed as well.
The ride of the Moto kit is remarkable. It’s so much smoother than the stock knobbies, which they should be! It may be my imagination but the rate of acceleration with the Moto kit ‘feels’ stronger, perhaps due to my removal of the pedal kit. I did NOT attempt to corner like I did on a racetrack, getting my knee down in turns! The Sur Ron is NOT a sport bike by any means, but I believe this kit was developed to modify the bike into a super motard type of ride. So yes I did power slide the rear end like a super motard is meant to do. We use to call that ‘backing it in’ and it felt controlled and stable. Who’s this kit for? I believe people who will primarily ride their Sur Ron on the street, obviously. And for those folks this is a great way to transform an already remarkable piece of hardware into a fun street hooligan … and for not much cash.