Shimano_Tiagra_10-speed_triple_STI-shifters_ST-4700 Shimano_Tiagra_10-speed_double_compact_4-arm_crankset_FC-4700

Shimano introduced a new revamped 10 speed Tiagra groupset today bringing their road tech down to a more affordable pricing level. One of the most major updates is bringing internal cable routing to the shifters. The cranks also adopt the new 4-bolt pattern that, while high-performing, has be divisive especially as it has limited replacement availability at the entry-level. The new 4700 group comes in this new Meteor Grey finish and should be available in shops in June.

Come across the break for details and pics of the new components…

Shimano_Tiagra_10-speed_double_front-derailleur_FD-4700Shimano_Tiagra_10-speed_triple_front-derailleur_FD-4703

New STI shifters get the look and feel of the higher end 105 and up groups, while sticking with 10 speed internals. With 3×10 function they may make for a good set of replacement levers for those with 10 speed groups, or may combine with other high-end groups to give triple range to those who need it for touring or the like.

The double front derailleur gets the updated extended geometry with a longer lever arm for faster shifting that is now across the 11 speed groups. While we’ve been a bit frustrated with how it tends to collect debris in cyclocross racing, the improvement in front shifting is impossible to overlook. The triple front derailleur doesn’t get the long lever arm, but the linkage is redesigned and hollowed out for theoretically more stiffness and a bit less weight.

Shimano_Tiagra_10-speed_triple_rear_derailleur_RD-4700-GS Shimano_Tiagra_10-speed_triple_rear_dereailleur_RD-4700-SS

Rear derailleurs get smoothed over a little bit and again add the longer lever of the more expensive groups with the cable bolt moved past the P-knuckle pivot. This should yield better shifting (and maybe 11speed compatibility?) and supports up to a 34 toothed cassette. It also puts the aesthetic a bit closer inline with 105, and less angular than the previous Tiagra 4600.

Shimano_Tiagra_10-speed_triple_compact_crankset_FC-4703

The crankset gets the same new 4-bolt 110mm BCD that allows anything from compact to standard road gearing. Shimano will be offering compact 50-34 and mid-compact 52-36 gearing from the start. This will also mean some cheaper chainring sets down the road that should be compatible with the more pricey race groups. It also suggests that Shimano is going all-in with this BCD, which will probably push more after market companies to continue to expand their offerings, hopefully both in more options and a wide price range. It’s also interesting to see that the triple crankset (50/39/30T) looks to keep the same BCD, but to add a third ring that bolts inside to a smaller diameter set of holes on the crank’s spider. We can’t see much from the only image we were given, but it looks like the small ring has an inner ring itself to allow it to connect to a very small bolt circle diameter.

Shimano_Tiagra_10-speed_triple_dula-pivot-brake-calipers_BR-4700 Shimano_Tiagra_10-speed_triple_flt-bar-shifters_SL-4700 Shimano_Tiagra_10-speed_triple_flat-bar-brake-levers_BL-4700 Shimano_Tiagra_10-speed_triple_hubs_RH-FH-RS400

The dual-pivot brakes look the same, but claim a 30% boost in power with better modulation. The flat bar shift and brake levers look to carry over from 4600 with just updated finishes to match. Hubs carry over too, in black or silver, hopefully with 11 speed compatibility.

28 COMMENTS

  1. To all those who bemoan the “planned obsolescence” of the Bicycle Industrial Complex, this is the flip side of that coin. So good, and so cheap for what you get.

  2. Anyone knows if the cable pull will be compatible with the 5600/6600 or the 5700/6700 standard? My guess would be 5700/6700 which is a bummer because it won’t work with mega 9 mtn rear mech.

  3. Another way to look at this is that if you are a current 105 user with a 10 speed setup, this is a new source of supplies that will work with your setup…

  4. So do the shifters use the new under-the-brakehood cabling routing, or does it still use the old school cable routing where the cables come out the side?

  5. Now I need to mix this triple with the new ird 10speed 11-42 cassette so I can rid up the side of the building.

    What rear der. or cage replacement would I use? I really want to ride up a building, or at least a 89 degree ramp.

  6. The mismatch between rings and crank irk me. Otherwise, looks like Shimano is pretty firm on that BCD. In general the aesthetic is becoming eerily closer to 105.

  7. Assuming this is not an April Fools joke, this Tiagra release looks pretty solid!
    The issue with the crank and new BCD is that the Hollowglide style chainrings and 4 bolts are about chasing lower weight, but the whole point of Tiagra is that it is budget orientated. Therefore it could be said that 4 chainring bolts is kinda pointless when the crank arms and chainring aren’t even hollowtech (assuming not, based on history of Tiagra).
    Having said that, the one BCD for all chainring options is neat, but again it’s now a proprietary Shimano standard so what are we meant to do with all our perfectly usable old 110 and 130 BCD rings?
    Question- is the triple crank the same as the standard double?

  8. The most infuriating part of the 4-bolt standard is that Shimano deems it necessary to color all the cranks differently, and sculpt the part where the ring meets the arms differently. It really undermines the standard as a universal standard when the only aesthetic match is from the same series and few 3rd parties want to touch it for the same reasons. With 5 bolt flat rings, all you had to do was choose silver or black.

    As someone mentioned previously, Tiagra doesn’t normally have Hollowtech I. It’s one of the cost cutting measures. Neither are the rings hollow if they’re like 105 rings. One has to wonder how much it weighs compared to something like a generic FSA Gossamer so often found on Tiagra bikes.

    I wonder if it will have the annoying shift pattern and lack of FD cable slack in low like 5800/6800. Contrary to most people, front shifting is my least favorite part of these groups. On the plus side, I can now convert the front to a triple, or maybe use a 10 speed width FD to reduce chain rub.

    One should also remember at the Tiagra level, selection of cassettes is limited and there’s not much in terms of close range cassettes. A triple is much better than a double with an odd cassette if an amateur rider wants to keep in the 1t zone.

  9. Can handle a 34 cassette which means it will handle a 36 cassette no probs.

    Look forward to getting a groupo for a youtube review as soon as it comes out.

  10. Looks like some places are reporting it will have Shimano 11 actuation ratios, which makes sense given the design of the derailers and shifters.

    So much for legacy 10 speed parts support. I’ll be buying my cassettes from SRAM anyways since they actually make a decent selection of gear options.

  11. It’s not a joke. Shimano does not present a 12 year old’s face to the world.

    Thoughts:
    This is going to be pretty tremendous for touring.
    I wonder if the rings are the trypophobic nightmare of the 105, or something different.
    The 2x and 3x FDs have a different pull ratio, meaning the left brifter must be an entirely different part.
    They *must* be making a new 2x flat bar shifter to deal with the new ratio.
    What is this “old rings” people seem to have stacks of laying about? When stuff comes into my shop used, it’s USED, and is headed nowhere but the scrap bin. Ride your rings, use them up, buy what’s new when you need something.

  12. @Eric Hansen
    With the price of Shimano rings vs cranks, we might as well just rivet the rings on for weight savings. Not everyone replaces with original Shimano rings.

  13. “One should also remember at the Tiagra level, selection of cassettes is limited”

    With the wide range derailleur, the selection will be just about any 10-speed cassette ever made and we know that Shimano will continue to produce a range of 10s cassettes to service all of the inventory out there.

    The chainring/spider pattern is smart. They’ve arrived at a small bolt circle that allows any practical size of chainring to fit and have built rigidity into the rings themselves so they still shift as well as the older 130bcd stuff. Now a user can get a different range of rings if their riding circumstances change, instead of changing the whole crankset. Besides, this is Tiagra, not D/A. 9.5 out of 10 riders will buy it, ride it, and enjoy it like it is. If they change, it’ll most likely be to a whole new bike.

  14. @Dinger
    Shimano only produces a limited range of “obsolete” 8 and 9 speed cassettes. The same will hold true for 10 speed. Tiagra cassette options are limited. Even 105 cassette options are limited compared to Ultegra. It’s how they make old groups obselete. They’ll make 10 speed cassettes, but not 10 speed cassettes attractive to racers.

    Take the current Tiagra cassette line-up, 11-25, 12-28 and 12-30. 11-25 is not a close ratio cassette. 12-28 has less range than 11-28. 12-30 doesn’t even get you as low of a gear as 11-32 and has less range.

    Tiagra cassette selection is horrible. It was better when 105 was 10 speed and still in production do you could use somewhat better cassettes. But good luck finding a close ratio 11-23 Ultegra 10 speed cassette now.

    As far as the chainring thing goes, you’ve only gone to prove that Tiagra level cranks should be riveted. If the other tiers are any indication, it will cost just about as much to replace the rings as the entire crankset.

    If you want a clever design, it’s Campy’s dual BCD 4-arm, not that they came up with dual BCD. They’ve arrived at a bolt circle design that allows any practical size of chainring to fit and have built rigidity into the crank itself so they still shift at least as well as the older 130bcd stuff. Now a user can get a different range of rings if their riding circumstances change, instead of changing the whole crankset.

    Oh, except the difference is that the Campy design doesn’t have sculpted rings that need to match the crank arm shape, doesn’t require advanced forging techniques to make hollow or 3D rings, makes consumable chainrings easier to manufacture, and allows for flat rings making it 3rd party (and oval ring) friendly.

  15. I can confirm the 11 speed pull ratios for the RD. Tried it out today, so it’s not only the new FD, but the new RD does not work with x700 shifters. Bummer.

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