Shimano 105 R7100 Groupset

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Customer Support Our dedicated team is always here to help with sizing, builds, and orders.

Warranty Protected 2-year manufacturer warranty

Shipping Included Included on most components and wheelsets. Free on orders over $100. Worldwide delivery with tracking.

Rider Approved We test and ride what we sell. Every product is hand-selected for quality and performance.

Shimano 105 R7100 Groupset

Shimano 105 R7100 — the do-it-all road groupset, available as 12-speed Di2 electronic or mechanical. It carries the shift feel, gearing range and hydraulic disc braking of the tiers above at a price built for real-world riders.

Configured to suit your bike: choose Di2 or mechanical, your chainrings, crank length, cassette ratio and rotor size.

Why Riders Choose the 105 R7100

Do-it-all 105: trickle-down Ultegra and Dura-Ace technology.
Di2: 12-speed electronic.
Hydraulic disc: confident, consistent BR-R7170 disc braking.
Wide gearing: 11-34 or 11-36 cassette for every gradient.
Made to fit: choice of chainrings and crank lengths.
Wireless Di2 levers: clean cockpit, fast shifts (Di2 builds).

Groupset Contains

Chainset	FC-R7100 — choice of rings and crank lengths
Bottom bracket	Available on request — supplied to suit your bike model
Cassette	12-speed, 11-34 or 11-36
Chain	CN-M7100 — 12-speed
Front derailleur	FD-R7150 Di2
Rear derailleur	RD-R7150 Di2
Shifters / brake levers	ST-R7170 hydraulic disc with Di2 shifting
Rotors	SM-RT64 Center Lock, 160 mm or 140 mm (disc only)
Calipers	BR-R7170 (disc)
Di2 parts	Battery, charging cable and two Di2 cables — the levers work wirelessly (Di2 only)

Chainring sizes, crank lengths, cassette ratio and rotor size are selected at the options above. Bottom bracket is supplied to suit your frame — tell us your bike model.

105 R7100 — FAQ

Can I get 105 as mechanical instead of Di2?

Yes. 105 R7100 is available as 12-speed Di2 electronic or as a mechanical groupset — select your preference in the options. Di2 parts (battery, cables) are included on Di2 builds only.

How fast does it ship?

Orders ship once processing is complete and a tracking number is generated. Delivery time depends on destination. For an ETA, message us with your location and the exact configuration you’re considering.

Do prices include duties and taxes?

Shipping and duty handling vary by destination. If DDP is offered for your destination, duties and import handling are included at checkout for eligible orders. If DDP is not available, duties and taxes may be collected by the carrier or local customs authority.

What is the warranty?

Warranty terms are provided by Shimano. If an issue occurs, Underdogs Cycling will guide you through the claims process and coordinate with the manufacturer where applicable.