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700c Thorn Disc Steel Fork - Gunmetal Imron

£135.00 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
Our Thorn 700c Reynolds 525 Steel Disc Forks have an ISO disc mount, direct fitting stainless mudguard bosses, stainless open brake line guide and stainless bosses for lo-loader carriers. The L1 dimension (centre of axle to crown race seat) is 383mm. They're suitable for use with mudguards, using tyres up to 40c and they're available in 46mm or 52mm fork offset in 5 different colours. They have a high quality cast fork crown and weigh 1255g with the 380mm steerer (the steerer may be cut down to suit, which also reduces the weight by 1.03g per mm).

They've been designed to fit our Rohloff equipped Thorn Mercury and/or our derailleur equipped Thorn Club Tour MK4 but they'll also be suitable to retrofit to many non-Thorn frames - check the required L1 and offset.

- Steerer: 1 1/8"
- Offset: Choice of 46 or 52 mm
- L1 (Axle to Crown): 383 mm

- For sealed and unsealed solo road touring use only
- NOT suitable for stunts, jumps or serious off road use and abuse
- Max. Rotor Size: 183 mm
- Max. Load: 5 kg per side
- Max. Rider Weight: 130 kg
- Check carrier mounting carefully (especially if not using Thorn MK5 Lo-Loaders)
- Lower carrier mounts need spacers to clear rotor
- NOTE: ISO disc mounts may require facing
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Questions & Answers (2)
Disc Or Rim For Touring ?
23 Apr 2017
i'm considering disc for a touring bike but the more i read about it the more i think 'disc brakes are only suited to off road mountain bikes' eg. heavier gauge forks required, hydraulic brakes blowing out on long descents, hydraulic fluid requiring bleeding from time to time. can you tell me what the mix of touring bikes you supply with rim brakes vs disc brakes ? thanks

Pretty much the only bikes we fit with a hydraulic disc brake are our tandems (and even this is usually in addition to a rim brake). We do a few options with cable disc brakes but still 80-90% of the bikes we sell are built with rim brakes, especially the world touring ones.

Ok For Lo-Rider Rack?
02 Dec 2016
If using mechanical disc brakes, such as Avid BB7(road), will these forks also allow a low-rider front rack (I use a Blackburn) to be fitted without compromising brakes or rack? Thanks!

These forks are designed to be use with discs and low riders at the same time. The lower mount of the rack will normally need to be spaced out to allow it to fully clear the brake.