0
Your Profile
Your Basket 0
Your Offers 0
Continue Shopping
Checkout
Trustpilot
To improve your shopping experience today and in the future, this site uses cookies.
Read our full Privacy Policy & Cookie information here
I Accept Cookies
Complete Shimano Ultegra Di2 12-speed groupset bundle with a dual-sided 4iiii Precision 3+ PRO power meter crankset, hydraulic disc brakes, and all the components needed for a premium electronic drivetrain upgrade.
Complete Shimano Ultegra Di2 12-speed groupset bundle with a dual-sided 4iiii Precision 3+ PRO power meter crankset, hydraulic disc brakes, and all the components needed for a premium electronic drivetrain upgrade.
Balfe's Bikes

Shimano Ultegra Di2 R8100 Groupset Bundle with 4iiii Precision 3+ PRO Dual-Sided Power Meter

£1,850.00 £2,859.00 35% off
Size Guide
Earn
in Customer Rewards when you buy this item today
Sign Up
Sign In
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Hassle free returns

In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

It is recommended that you use a recorded delivery service or return to a store to ensure your items are received by us. We cannot assume responsibility for items that are lost in transit back to us.

Returning an item

Online or in-store purchases can be returned to any of our 12 stores free of charge or can be returned by post or courier at your cost after completing the online returns form below. If you are returning an item due to a fault, we will refund your postage costs.

Bikes & Bulky items

If you wish to return a bike or bulky item to us, please keep the box it arrived in and let us know by contacting our support team via our online webchat, email or by phone (020 45063856) and we will help arrange a collection.

Non Bike - Customer Returns Form

If you wish to return or exchange an item, please fill out the form below following the steps inside. Returns can be processed quicker if all required information is provided.




Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Shimano Ultegra Di2 R8100 Groupset Bundle with 4iiii Precision 3+ PRO Dual-Sided Power Meter

Season:ASSEMBLY

Brand:Balfe's Bikes

Code:4iULTDi2DISCGSET

Take your road bike to the next level with this premium Shimano Ultegra Di2 R8100 groupset bundle, paired with the advanced 4iiii Precision 3+ PRO dual-sided power meter. Combining lightning-fast wireless electronic shifting, powerful hydraulic disc braking, and professional-grade power measurement, this package is designed for riders who demand exceptional performance for training, racing, and long-distance riding.

At the heart of the bundle is the 4iiii Precision 3+ PRO power meter, delivering ±1% accuracy, advanced cycling metrics, left/right power balance, and Apple Find My integration for added peace of mind. Shimano's latest Ultegra Di2 components provide fast, reliable shifting with fully customisable synchronised shift modes, while the hydraulic disc brakes offer confident stopping power in all weather conditions.

Supplied with the cassette, chain, battery, charger, Di2 wiring and all key electronic components, this comprehensive bundle provides everything required to build or upgrade to Shimano's flagship Ultegra 12-speed electronic drivetrain.

Features:

  • Complete Ultegra Di2 Upgrade: Includes Shimano Ultegra 12-speed electronic drivetrain, hydraulic disc brakes and all essential electronic components.
  • Dual-Sided 4iiii Power Meter: Measures power from both legs independently with ±1% accuracy, left/right balance, pedal smoothness and torque effectiveness.
  • Apple Find My Integration: Locate your bike or power meter using Apple's Find My network for additional security.
  • Wireless Di2 Shifting: Fast, accurate electronic gear changes with customisable full and semi-synchronised shifting.
  • Hydraulic Disc Braking: Powerful, consistent braking performance with excellent modulation in all weather conditions.
  • Hyperglide+ Drivetrain: Smooth, rapid shifting under load with Shimano's latest 12-speed cassette and chain technology.
  • Long Battery Life: 4iiii power meter offers up to 550 hours of battery life, while the Shimano Di2 battery delivers approximately 1,000km per charge.
  • Premium Reliability: Waterproof components, robust construction and trusted Shimano and 4iiii engineering.
Specification:
  • Bundle Includes: 4iiii Ultegra FC-R8100 Precision 3+ PRO Dual Power Meter Crankset, Shimano Ultegra CS-R8101 Cassette, Shimano CN-M8100 Chain, Shimano RD-R8150 Rear Derailleur, Shimano FD-R8150 Front Derailleur, Shimano ST-R8170 Hydraulic Disc STI & BR-R8170 Calipers, Shimano EW-SD300 Di2 Wires (1400mm & 900mm), Shimano BT-DN300 Internal Battery, Shimano EW-EC300 Charging Cable
  • Groupset: Shimano Ultegra R8100 Di2
  • Speeds: 2x12-Speed
  • Power Meter Type: Dual-Sided Crank-Based
  • Power Meter Accuracy: ±1%
  • Connectivity: ANT+ & Bluetooth Smart
  • Apple Find My: Yes
  • Cycling Metrics: Left/Right Balance, Pedal Smoothness, Torque Effectiveness
  • Automatic Terrain Selector: Yes
  • Power Meter Battery: CR2032 Coin Cell
  • Power Meter Battery Life: Up to 550 Hours
  • Power Meter Waterproof Rating: IPX7
  • Power Meter Cadence Range: 30–170rpm
  • Power Meter Power Range: 0–4,000W
  • Power Meter Profile: 5.5mm
  • Power Meter Weight: 29g
  • Cassette: Shimano Ultegra CS-R8101 Hyperglide+ 12-Speed
  • Chain: Shimano CN-M8100 Hyperglide+ with Quick Link
  • Rear Derailleur: Shimano RD-R8150 Di2 Shadow Design, 12-Speed
  • Front Derailleur: Shimano FD-R8150 Di2 Braze-On, 2x12-Speed
  • Brake/Shift Levers: Shimano ST-R8170 Di2 Hydraulic Disc STI
  • Brake Calipers: Shimano BR-R8170 Flat Mount Hydraulic Disc
  • Di2 Battery: Shimano BT-DN300 Internal 7.4V Li-Ion, 3-Port
  • Estimated Di2 Battery Range: Approximately 1,000km per Charge
  • Charging Cable: Shimano EW-EC300 (1700mm)
  • Di2 Wires Included: EW-SD300 1400mm & 900mm
  • Brake Fluid: Shimano Mineral Oil
  • Rotor Compatibility: Flat Mount (Rotors and adapters not included)
Sizing Information
Professional Opinion
Question(s) answered about Shimano Ultegra Di2 R8100 Groupset Bundle with 4iiii Precision 3+ PRO Dual-Sided Power Meter
Ask a question
Question(s) asked regarding Shimano Ultegra Di2 R8100 Groupset Bundle with 4iiii Precision 3+ PRO Dual-Sided Power Meter

Ask a question

Your name
Your email address
Your phone number
Your question
Submit Question  Close
Home Road Cycling Components Balfe's Bikes Groupsets