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Pro-Bolt M5 x 25 Alloy (1)

Product code: 10041

From £1.33 to £1.50RRP: £1.50(Save up to 12%)

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Pro-Bolt M5 x 25 Alloy (1)


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- Super light replacement aluminium alloy bolts by Pro-Bolt.
- Made in the UK from 7075-T73 aluminium, these bolts are perfect for pimping your bike in low-stress areas. Please see the Additional Information tab for more details.
- 4mm allen key head.
- Available in a wide range of anodised colours.
- Please note that the anodising colours vary on this item. If you order more than one of the same product we will always match them as closely as we can, but it's not always possible to get a perfect match. If the colours we have in stock are 'too far' from each other, we will contact you before dispatch to discuss the options.
- 65% lighter than standard steel bolts!
- Sold singly. - Weight: 1.5g

Additional Information

Always use a good quality allen key when fitting this item and apply copper grease to the threads before installation. Do not overtighten.

Potential Application

4-Bolt brake clamp bolts (for ultimate weight saving only, maximum torque 3.5Nm)
Lever clamp bolt for Magura HS33 brake levers

Lightweight upgrade bolts such as these should always be used with care, we cannot accept responsibility for any damage caused by incorrect installation or misuse.



how many bolts do you get?

Posted by james on 30/09/2011

Reply from TartyBikes on 30/09/2011

Hi James - As the description states, these bolts are sold singly/individually. Thanks, Mark


would these fit brake mounts? if not which ones would i need?

Posted by jack on 30/09/2013

Reply from TartyBikes on 01/10/2013

Hi Jack - there are a few points of consideration when doing this. This reply assumes you are talking about four-bolt brake mounts, not disc or vee. First off: yes - M5x25mm is the size you would need, though on some setups they may be slightly too long and require trimming down - 20mm, the size below, will always be too short and so is not an option. The bolts MUST be greased when used, and a washer must be used between the head of the bolt and the brake clamp. Also bear in mind they are considerably less weak than steel bolts and so are prone to snapping on over-tightening, which is much easier to do than with steel bolts. Thanks, Flipp.

Laurence Knight

Are you able to use these for the 04 styled magura lever?

Posted by Laurence Knight on 20/09/2011

Reply from TartyBikes on 20/09/2011

Hi Laurence - These bolts should fit fine. You may need to trim the bolt down a little, but that shouldn't be much of an issue. Thanks, Mark


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Based on 1 customer rating


Look good but are weak!

Posted by Cai on 15/01/2011

When used as Magura lever bolts these were fine, looked good and sved weight. But when I used them to clamp the Magura slaves it became obvious that these are too weak for the job, two of the heads came clean of when tightening them up - and I in no way overtightened the bolts as the slaves could still move a little. So I'd recomend these for area's that don't demand alot of clamping strength.

Reply from TartyBikes on 18/01/2011

Hi Cai - We don't recommend tightening these bolts above 3.5N/m as they can shear/break if tightened more. When installed using grease they tighten up nicely, certainly without causing any damage to the bolt. Sorry to hear you had problems with them!

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