SHIMANO Di2 PARTS LIST

Time to get serious and purchase the Shimano Di2 electronic shift gear.  

There are a few options within the Shimano Di2 range and most of the parts are readily interchangeable.  I familiarised myself with the Shimano e-tubeproject website which provides a comprehensive guide to compatibility and the history of the firmware upgrades since Di2 was introduced.

We opted to stick with 10 Speed Ultegra 6770 Deraileurs due to wheel compatability!  The 650c wheels we had were going to be difficult to convert to the wider 11 speed cassette and so we've decided to upgrade my Shiv to 11 speed (easier to do) and use the 6770 derailleurs over to the Slice.

From there I went to the  Shimano Manuals (available online) to figure out the balance of the parts. In general I stuff with the Ultegra 6870 parts where available.

DM-0001A-002 - 6770 Ultegra Dealers Manual  - Majority of the parts but only the external battery.

DM-UL0001-00 – 6870 Ultegra Dealers Manual - Schematics and part numbers for the internal battery and time trial shifters.

The cable lengths for the 650C frame were determined by measuring the frame tubes and allowing around 50 - 100mm extra that will be tucked into the frame tubes once it is all plugged together.

The battery cable allows the seat tube to be removed 100mm clear of the frame for access to unplug the cable.

To save a few dollars I opted to go for the DIY remote shifters using an SW-R600 climbing shifter and a set of Cateye CD300DW buttons instead of the bulky Shimano ST-6871 brake levers.  I have already done this successfully on my Shiv TT and will provide more details on this as I go this time around.

SHIMANO Di2 PARTS LIST
No.	Description	Part Number
1	Front Derailleur	FD-6770
2	Rear Derailleur	RD-6770
3	Front Junction A (5 Port)	EW90-B JB
4	Rear Junction B	SM-JC41
5	Internal Battery	SM-BTR2
6	Down Tube E-tube Cable	EW-SD50 (750mm)
7	Seat Tube E-tube Cable	EW-SD50 (650mm)
8	Rear Derailleur E-tube Cable	EW-SD50 (600mm)
9	Front Derailleur E-tube Cable	EW-SD50 (400mm)
10	TT Bar Switches	SW-R671
11	Battery Charger and USB interface	SM-BCR2
12	Polyurethane Flexible Adhesive	Sikaflex 227 (or similar)
13	Grommets 6mm	SM-GM01
14	Cable cover stickers	SM-EWC2
15	Plug Tool	TL-EW02
16	TT Horn / Brake Shifters (Normal)	ST-6871 (Option 1)
17	TT Horn / Brake Shifter (DIY)	SW-R600 (Option 2)
18	TT Horn / Brake Shift Buttons (DIY)	Cateye CD300DW (Option 2)
19	JST Connectors (DIY)	JST 2 Pin
20	Flexible Cables (DIY)	15AWG Electrical Cable
21	Adhesive	5 Minute Epoxy
22	Cable protection	Heat Shrink
Notes: 1. Items 1->12 are required as a minimum (Or equivalent alternatives) 2. Items 13->15 help prduce a neat install 3. Item 16 is the optional ST-6871 brake lever shifters 4. Items 17->22 are optional DIY brake shifter parts (RD Shift only)

I included a few consumables and adhesives which I know I will need from my experience in the previous Di2 Shiv TT build.  I will explain the need for those as the build progresses.

Armed with this list of part numbers I scoured all the available suppliers and eventually ordered everything I needed.  No single supplier could provide all the parts, stocks were limited and prices varied significantly so some time invested here yielded good savings which will go towards that power meter budget ;-)

We'll have a week or two wait for the parts but there is still more to do!  Next up we'll move on to the cockpit upgrade.