I converted 525 set to 520 and increased the ratio for my offroad racing w650It weights 136 gramsthe stock ones is 195 grams
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25.24 USD (3,749 JPY)
Webike Point: +37 pt
(0.24 USD)
Delivery Information
This item is discontinued.
Product detail
■Number of teeth: 12
■For front
■Compatible chain sizes: 428
[Material]
Chromium molybdenum steel (iron tetroxide coating finish)
[Color]
Black
[Specification]
Heat treatment: carburizing and nitriding treatment
Durability: 10000 to 30000km (*)
**The stock size chain cannot be used on vehicles that are set up for conversion, and must be converted to the correct chain size.
*The color and shape of the delivered product may differ from the picture.
*If you change the number of sprockets from the stock, it may not be able to be installed on some models.
*Durability is for reference only.It depends on your riding style, chain size and maintenance condition.
*Offset figures are for sprockets only.
*The actual offset of the chainline from the stock value will vary from model to model.Please note that if the stock sprocket has an offset, that value will be subtracted.(It depends on each model)
*Not all of the available tooth numbers can be installed without interference to the vehicle body.Please confirm the installation of each vehicle body according to the number of teeth by yourself.
*Not all sprockets have lightweight holes.
*There may be changes in product specifications due to the manufacturer's reasons..
* The image is only for reference. The image shown may differ from the actual product.
The synergistic effect of high hardness by high level quenching and anti-corrosive treatment that does not deteriorate the material boasts excellent durability.When carburizing and nitriding heat treatment is applied to steel materials, it is very difficult to maintain high-precision dimensions because of the different expansion and contraction rates.Sunstar applies a special heat treatment process using its own facilities and technology.
| Stock Spec List | |||||
| Rear | Reduction ratio | Chain | Compatible Manufacturer Name | Compatible Model | |
| 14 | 47 | 3.36 | 428-118 | YAMAHA | YZ80 93-01 |
| 13 | 47 | 3.62 | 428-126 | YAMAHA | YZ80 LW 93-01 |
| 14 chots | 48 chots | 3.43 | 428-118 | SUZUKI | RM80 89-01 |
| 13 | 48 | 3.69 | 428-122 | SUZUKI | RM80 L 89-01 |
| 14 chots | 47 chots | 3.36 | 428-118 | SUZUKI | RM85 02- |
| 13 chintai | 47 chintai | 3.62 | 428-122 | SUZUKI | RM85 L 02- |
Sprocket Course - Basics - Frequent maintenance is the secret to riding your bike for a long time!SUNSTAR
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
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Beware has play on main output shaft
My old sprocket has zero play, Sunstar has movement on the splines. Splines over time will be destroyed if installed. Bought OEM to avoid another bad purchase. Also bought a brand new main output shaft for future engine overhaul, same result (play on splines)
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Item received early den expected.getting ready for my next sporket and chain change.packing was always tip top.highly recommend to shop at webike.thank you TEAM WEBIKE.
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Delivery was prompt & no issues. Satisfied with their service.Do make sure the products fits your bike otherwise you could try ask them.
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