PSA: Trek Rail chain guide

[mintyjim]

If you break yours (or your mate breaks it when borrowing your bike...) I can confirm that a reasonably cheap replacement, off ebay, fits just fine! Deckas, but likely sold under alternative names.

VXM/DECKAS ISCG05 Chain Guide Top guide 30t-40t MTB, with additional hardware! | eBay

VXM / DECKAS ISCG05 Chainguide Top guide 30t-40t Mountain bike T6 6061 CNC Alloy. Weight: ISCG05 Approx 30g (Ex. Chainring Compatibility: 30t to 40t (round) 30t to 38t (Oval). It is fully adjustable to support round chainrings ranging from 30t all the way though to a 40t ring. ).

www.ebay.co.uk

£14 posted. Decent price, decent quality, but I would use the original spacers and torque bolts:

 

[Doomanic]

I bought the same thing from a different seller for 6 quid last November. It snapped like a twig when my chain broke last weekend.

 

[Doomanic]

MTB Bike Chain Guide Bash Guard for Single Ring ISCG 03/05/BB Mount ZTTO UK | eBay

Find many great new & used options and get the best deals for MTB Bike Chain Guide Bash Guard for Single Ring ISCG 03/05/BB Mount ZTTO UK at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

7 quid here.

 

[mintyjim]

I've been robbed!!!! That's a pint and some chips. Gutted.

 

[mintyjim]

I bought the same thing from a different seller for 6 quid last November. It snapped like a twig when my chain broke last weekend.

To be fair, the OEM one is pretty pants too!

 

[Doomanic]

Yeah, the OEM one broke with no obvious cause!