Tri Di2 Upgrade - what do I need?

[Drago]

I'm puzzled as to how you think it will make you ride faster?

But if you're starting from scratch etap is well worth a look.

 

[fossyant]

And the big 'if' is can you get the components at the moment ?

If learning, you may be better servicing and looking after the current groupset. More sprockets won't make you faster. You need to consider your lowest gear for hills if you aren't fit.

 

[JoeyB]

I've also just embarked on a Di2 upgrade, although not for Tri.

My first recommendation is to build a spreadsheet!

My winter bike already has 105 11spd mechanical so crank, chain and cassette are being retained for now. I went this route:

Description	Part Number	Option
Shifters	ST-6870
Front Derailleur	FD-6870-F
Rear Derailleur	RD-6870-GS
Battery	BT-DN110-A
Battery Charger	SM-BCR2
Junction Box A (Bar End)	EW-RS910
Cable - Junction Box A > Shifter	EW-SD50	350mm
Inline Wireless Adapter	EW-WU111
Junction Box B (4 Way)	SM-JC41
Cable - Battery	EW-SD50	600mm
Cable - Front Derailleur	EW-SD50	300mm
Cable - Rear Derailleur	EW-SD50	600mm
Shifter to Shifter Cable	EW-SD50	600mm
Shifter to BT Cable	EW-SD50	300mm
Junction A to B Cable	EW-SD50	1200mm

You can do it differently but I wanted the bar end junction box and clean internally routed cabling / battery.

 

[Cycleops]

Yes, as @fossyant says availablity might put the kybosh on it for a while.

 

[raggydoll]

I've also just embarked on a Di2 upgrade, although not for Tri.

My first recommendation is to build a spreadsheet!

My winter bike already has 105 11spd mechanical so crank, chain and cassette are being retained for now. I went this route:

Description	Part Number	Option
Shifters	ST-6870
Front Derailleur	FD-6870-F
Rear Derailleur	RD-6870-GS
Battery	BT-DN110-A
Battery Charger	SM-BCR2
Junction Box A (Bar End)	EW-RS910
Cable - Junction Box A > Shifter	EW-SD50	350mm
Inline Wireless Adapter	EW-WU111
Junction Box B (4 Way)	SM-JC41
Cable - Battery	EW-SD50	600mm
Cable - Front Derailleur	EW-SD50	300mm
Cable - Rear Derailleur	EW-SD50	600mm
Shifter to Shifter Cable	EW-SD50	600mm
Shifter to BT Cable	EW-SD50	300mm
Junction A to B Cable	EW-SD50	1200mm

You can do it differently but I wanted the bar end junction box and clean internally routed cabling / battery.

Do you have a preference between the mechanical 105 on your winter bike and the di2?

 

[Ming the Merciless]

Deep pockets is what you’ll need. Then everything else will workout just fine.

 

[JoeyB]

Do you have a preference between the mechanical 105 on your winter bike and the di2?

I'll let you know as soon as its all fitted, I've literally just taken delivery of 80% of the parts today. Just waiting on a battery charger and need to source a couple more cables

 

[JoeyB]

I've managed the upgrade above using a mixture of old and new parts for around £625 all in. It can be done cheaper if you don't want some of the newer junction boxes / wi-fi module etc.

Good luck trying to get a SRAM groupset at the moment for any sort of reasonable price. I want Red AXS for a new summer build but I've parked that until next year now when hopefully the stock situation has calmed down.

 

[raggydoll]

I'll let you know as soon as its all fitted, I've literally just taken delivery of 80% of the parts today. Just waiting on a battery charger and need to source a couple more cables

Cheers, sorry, I didn't realise it wasn't finished yet.
£625 is a good price too. You did well sourcing parts for good prices!