Here is a link to the best Sur Ron service manual I’ve found to date.


Dimension & Weight
Length: 1870mm 73.62 inches
Width: 780mm  30.7 inches
Height: 1040mm 41 inches
Min. Ground clearance: 270mm 10.6 inches
Wheelbase: 1260mm 50 inches

Seat Height 810mm 31.8 inches

Vehicle weight: 50kg 110.2 pounds
Weight distribution of Fr. Wheel axle: 24kg 52.9 pounds
Weight distribution of Rr. Wheel axle: 26kg 57.3 pounds
Max. load capability: 100kg 220.5 pounds

Forward inclining angle: 26°
Steering angle: 46°
Fr. Absorbers stroke: 200mm 7.87 inches
Rr. Absorber/Wheel stroke: 87/210mm 8.26 inches

Angle & Stroke
Performance & transmission
Max. motor rotation speed: 4500r/min
Cooling method: Air-cooled
Climbing ability: 35°
Range: 100km(@ 20km/h)
Max. torque: 200N.m
gearshift type and transmission ratio: 1:7.6
Transmission type: Belt + Chain
Belt brand and model: HTD 8M

Frame & Absorbers
Frame type: Aluminum alloy double cradles design
Fr. Absorber: Double-tube telescopic shock absorber
Rr. Absorber: Multi-link central shock absorber

Tires & Brake
Tire size (Fr.): 70/100-19
Tire size (Rr.): 70/100-19
Wheel type (Fr.): 19×1.4
Wheel type (Rr.): 19×1.4
Fr. brake type: Bilateral 4-piston hydraulic disc brake
Rr. Brake type: Bilateral 4-piston hydraulic disc brake

Electronic parts
Controller Type: 48/60V self-adaptable
ECU type: GPS Data connection
Horn: European standard horn
Charger type: Constant current & voltage 58.8V-5A
Battery specs: 51.8V25AH Battery specs
Headlight type : German standard bicycle headlight(v)(w)(mm)
Brake lamp/tail lamp type: German standard bicycle tail lamp(v)(w)
USB Power source: USB-2.1A single socket
single socket: IBN negative display dashboard

Battery size 14.5″x6.4″x5.5″
Battery weight 24.5lbs

420 CHAIN WITH 1/2″ PITCH (NO “O” RING) on the standard LightBee (LB)
420 GOLD CHAIN WITH 1/2″ PITCH “O” RING on the LightBee “X” (LBX)
104 links 42T
106 links 48T
TBD links 48T + pedal kit
108 links 52T
110 links 54T
112 links 58T
114 links for 60T
O’Ring chains will require a O’Ring compatible master link
If you have the pedal kit installed, you need one extra link.
Belt drive model: Contitech HTD 560 8M, 15mm wide

Bolt sizes and torque settings


  1. Thanks for this Mark First time I’ve seen all the actual specs

    • You bet Blane. Thanks too for letting me know it helps you. Makes doing this worthwhile.

    • any videos to mounting o-ring chain?
      received my light b x w/added pedal kit and I’m wondering if i can remove the pedal kit and install the o ring chain included without much effort. two rides in and i want to leave the pegs for a while without spinning the pedal kit bb spindle needlessly.
      seems ideal, then if I want to mount the pedal kit again I go back to the standard chain.
      amazing work on your site! your build and comments on quality of the manufacturing were major reasons that led me to buy. Thank You!

      • Hi Adam and welcome to the Sur Ron addiction! LOL Changing over to an O ring chain is no different than your non O ringer. On my Specifications page you can see how many links are needed depending on your sprocket size. If you need to remove links on my Gear I Use page I have the chain breaker I use there along with the O ring Master Link I’ve purchased. Hope this helps you.

  2. 107 links 48T + pedal kit, this must be wrong, the chain can not have an odd number of links

    • Thank you for pointing this out Roger. I obtained the information from the online resource supported by Luna here. I have removed the pedal kit link count from my site. Once I actually count it myself I will repost the correct link count. Thanks again.

  3. Wow Mark. Last night I finally opened up the FAQ and bingo, up pops †he torque specs I’ve been trying to find for months. Not sure why several Luna staff I’ve asked seem to have no idea such a thing exists… another wonderful surprise from your good efforts… as always, thanks!

    • Glad you find the site and information helpful. Thanks for letting me know John. Take care

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