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It's easy to overlook the humble bottom bracket in the quest for the most efficient, drag-free riding experience, as this component usually does its job without putting up much of a commotion. Thankfully, though, Shimano knows how integral this component is to your drivetrain, which why it spends considerable time making certain that it uses only the best, silky-smooth bearings, advanced sealing, and high manufacturing tolerances.

Such is the case with its new Ultegra SM-BB71-41B PressFit Bottom Bracket design. Where a typical road bike has a 68 or 70mm bottom bracket shell width, a BB86-equipped frame has a shell that measures 86.5mm wide. A BB86 shell lacks internal threads and has a 41mm inside diameter.

This SM-BB71-41B PressFit bottom bracket is made to press right into your frame. It will mate your Shimano HollowTech crankset to any frame equipped with a BB86 bottom bracket shell. This bottom bracket also comes with two steel cartridge bearings that are pressed into composite cups. The cups increase the outside diameter of the assembly to 41mm in order to match the frame's bottom bracket shell. There's a 1.75mm thick outer-lip that provides a positive stop for the cups when you press them into place.

The Shimano Ultegra SM-BB71-41B PressFit Bottom Bracket is available in one size. The assembly weighs in at around 63 grams.


Material: [shell] composite, [bearings] steel

Shell Type: BB86

Shell Width: 86.5 mm

Axle Type: Shimano Hollowtech

Claimed Weight: 63 g

Recommended Use: road cycling and racing




  • Surround wrapping upper structure reduces overlap, provides Glove-like fit.
  • Low stack height midsole helps stabilize foot, maximizes power transfer and efficiency.
  • Integrated sole and upper construction sets a new level of fit, stability, rigidity and lightweight performance.
  • Mesh/TPU/Synthetic leather composite upper provides comfortable fit and better breathability.
  • Light carbon fiber reinforced nylon sole for power transfer.
  • Available in wide width.

With Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear. The 6870 shifter offers improved ergonomics; this combined with the easy shifting levers mean less effort per shift.

The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear shifts. Simply pressing tactile buttons allow effortless and comfortable shifting even when your hands are cold.

Instant, accurate shifts
Improved ergonomics
Easier access to shift buttons from the top of the hoods
Cleaner wiring due to single-wire E-TUBE connections
Easy to add satellite shifters to bar tops or in drops
Programmable multi-shift function
Cassette Compatibility: 11-speed
Front Shifting: Double



Shimano's SPD-SL pedal system for road bikes is designed for maximum power transfer. The same holds true for the PD-R7000 pedals from the 105 series that help you get all your power onto the road, thanks to a light and stiff carbon composite body and a wide stainless steel contact surface. The wide bearing spacing of the 05 pedal offers – just like on the high-end siblings of the top groups Dura-Ace and Ultegra – optimized load distribution and thus increased durability of the bearings.

1 Details: · Wide and stiff SPD-SL pedals

Wide platform with stainless steel contact area for maximum power transfer

Chromoly steel axle

Triple bearing for smooth running

Maintenance-free compact bearing · Wide bearing spacing for even load distribution

Adjustable release tension · 31° release angle

 Material: carbon composite pedal body, injection moulded 


This is the Shimano Ultegra Di2 Internal Junction Box. This box is referred to as the junction box "B" on a Di2 build. The SM-JC41 is for use with internal wiring setups and is the main center of e-tube Di2 systems. For external wiring setups see the SM-JC40.

  • Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur, rear deailleur, cockpit junction box and battery mount
  • Use Di2 system checker to update component firmware from
  • All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions

Deskripsi Shimano Battery Di2 BT-DN110-A
Description of Shimano Di2 BT-DN110-1 Battery Pack
Rechargeable 500 mAh battery pack for electronic Shimano Di2 shifting system

The lithium-ion battery BT-DN110 can be mounted internal or external. The internal assembly takes place in the head tube or in the seat post. For external mounting the SM-BTC1 bracket is required.

The battery provides a long service life and a high battery performance (up to 2.000 km with one charge). The optional connection cable (EW-SD50) are available (from 250 to 1400 mm) in various lengths. Measurements: 17 mm; length 160 mm. Capacity: 500 mAh.

Shimano BT-BN110 - Bluetooth Technology
Bluetooth technology allows riders and mechanics to communicate wirelessly with the EW-WU101 or SC-MT800 data transmitter unit via a computer, tablet or a smart phone. Fine adjustments in the workshop or setting customized shifting preferences on the road/trail are now much more easier. The prerequisite is the use of the BT-DN110 battery pack or the use of the BM-DN100 Holder for the external battery SM-BTR1.