Sizes
When we first started making mudflaps, most mudguards were the full-length finishing below the level of the hub. Thin tyres meant most people had 35mm guards like the SKS Chromoplastics. Our standard size flaps were designed exactly for this.
Since then mudguards have generally become shorter and tyres and therefore guards have become wider and our range of sizes have evolved for the varying widths and lengths of guards as well as protection and aesthetic preferences.
We realise that this choice is overwhelming but at the same time we know that cyclists really like to dial things in and appreciate the options to get a good fit.
Popular Mudguard Recommendations
First, here are our recommendations for popular mudguards. Note that these are for the guards on typical bikes that we have observed but where these mudguards finish on the wheel is dependent on individual bike geometries and e.g. whether you attach a front mudguard in front or behind the fork crown.
| Mudguard | Front Flap | Back Flap | Notes | ||
|---|---|---|---|---|---|
| SKS Race Blades | Standard | Long | Race Blade rear length is dependent on seat stay angle. Flatter seat stays lead to shorter guards. Long or Long Wide front as an alternative for extra protection. | ||
| SKS Race Blades XL | Wide | Long | |||
| SKS Chromoplastic 35mm | Standard | Standard | Back Cone as alternative to have same shape front and back. Existing front flap removal required but front drilling tricky | ||
| SKS Bluemel 35mm | Standard | Standard | Back Cone as alternative to have same shape front and back. Some models come with small rubber extensions, which should be removed. | ||
| SKS Chromoplastic 45mm | Wide | Wide | Back Cone Wide as alternative to have same shape front and back. Existing front flap removal required but front drilling tricky | ||
| SKS Bluemel 45mm | Wide | Wide | Back Cone Wideas alternative to have same shape front and back. Some models come with small rubber extensions, which should be removed. | ||
We will be adding to this list over the winter...
Custom Sizing by Measurements
If your mudguards are not in the list you can choose based on your mudguards width and the distance to floor.
- For the width measure the mudguard width using a ruler (this will normally be the same as the width quoted on the product description)
- Then, measure the distance from the tip of the mudguard to the floor
- Finally use these tables to get our size recommendation for front and back sizes.
| FRONT | Distance to Ground | ||||
|---|---|---|---|---|---|
| Mudguard Width | <200mm | 200mm - 320mm | 320mm - 380mm | 380mm+ | |
| Mudguard Width | less than 35mm | No Flap Needed | Narrow (or Standard) | Long | A mudflap will likely stickout towards the feet and be ineffective. |
| 35-45mm | Standard (or Mega Flap) | Long | |||
| 45-55mm | Wide (or Mega Flap) | Long Wide | |||
| 55-75mm | Extra Wide (or Mega Flap) | Long Wide | |||
| 75mm+ | XX Wide (or Mega Flap Wide) | Back Mega Flap | |||
| BACK | Distance to Ground | ||||
|---|---|---|---|---|---|
| Mudguard Width | <250mm | 300mm - 350mm | 350mm - 400mm | 400mm - 450mm | |
| Mudguard Width | less than 35mm | No Flap Needed or > 200mm consider front flap | Narrow (or Standard, Cone) | Long | Extra Long |
| 35-45mm | Standard (or Cone) | Long (or Cone Long) | Extra Long | ||
| 45-55mm | Wide (or Cone Wide) | Long (or Cone Long) | Extra Long (or Mega Flap Long) | ||
| 55-75mm | Extra Wide (or Mega Flap) | XX Wide (or Mega Flap) | Mega Flap Long | ||
| 75mm+ | XX Wide (or Mega Flap) | XX Wide (or Mega Flap) | Mega Flap Long | ||
Below are some images to give more idea of how the different flaps look on different size mudguards.
Back Standard Flap on 35mm SKS Chromoplastics
Front Standard Flap on 35mm SKS Chromoplastics
Back Wide Flap on 50mm SKS Chromoplastics
Front Wide Flap on 50mm SKS Chromoplastics
Standard Front and Long Back on SKS Race Blades XL
Extra Wide Front Flap on 60mm SKS Chromoplastic
Cone Shaped Back Flap on Radial Narrow Guards