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Shimano Tiagra ST-4603 10 Speed Triple Road STI Levers - OEM Pack

£99.99 Please note this product has selling restrictions to your country. was
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SJS Cycles part number : 
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- Supplied with inner gear cables only, no down tube stops (see our part #5511) no brake or outer cables.
- Easy operation design lever - compact lever bracket hood is made from soft rubber and anatomically shaped to allow easy braking and shifting regardless of hand position
- Arced travel on the shift lever always keeps the lever in reach when sweeping shifts across the cassette
- 10-speed precision road shifting
- Adjustable reach main lever via a shim system and light-action release lever assure easy gear shifting and braking
- Super SLR brake levers for use with Super SLR brake callipers
- Optical gear display incorporated into the top of the shift lever instantly shows you what gear you're in
- Integrated cable adjusters
- Precision shifting courtesy of Shimano indexing system
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Questions & Answers (4)
Parts question
11 Dec 2018
Does the Shimano tiagra st-4603 come with both the 4 and 8 degree adjustment blocks?

Also, does it come with the cable adjustment bolt unit?


Thank you for your enquiry. Both the 4 & 8 degree adjustment blocks are included with this item but not the cable adjustment bolt unit however we do sell this separately on our item number 35261.

Regards 13/12/18
Can I use these as a replacement for my 6603 Ultegra shifters?
13 Oct 2018
Yes, these will be a suitable replacement!

Thanks - 15/10/18
Will the LH lever operate an XT triple front mech and XT 26-36-48 chainset?
17 May 2018
Hi there,

Unfortunately this combination will not work as the pull ratios are different.

Front & Rear Derailleur To Match
06 Feb 2015
Can you recommend a front & rear derailleur to work with these shifters? I have a 48/36/26 chainset and would like a 11/32 (or 11/36 if possible) cassette (i.e. something like the setup on the Thorn Club Tour). Thanks

If you're looking to run a wide ratio cassette like 11-36 with these shifters you will need to run a 9spd mtb rear derailleur, any of Shimano's will be suitable. For the front derailleur you will still need to use a road 10spd derailleur, any standard triple option will work.