FREE SHIPPING on orders of $50 or more.* Same day shipping before 3PM Pacific.
X
Questions? Call our experts!
1.800.651.4050
SHOP NEW ARRIVALS
DEAL OF THE DAY
ALL SALE ITEMS
SHOP CLOSEOUTS

Parts & Accessories

Shimano
Soma Fabrications
SRAM
FSA
Crank Bros
PRO
Race Face
Park Tool
Problem Solvers
Origin8
Campagnolo
Norco Bicycles
Recent Reviews
rating
by DLinLV
Competitive Racer
Las Vegas
Nice to have if you need to access DI2 on your phone

I setup my DI2 on my PC, but you can do it on your phone now with this and the new battery. I noticed battery life has gone down a lot so I am now only planning to use this if I have any adjustments to do on the ride. Nice thing is if you have issues with the DI2 on a ride, you can access the system with your phone to make adjustments if needed, or get out of limp home mode. But, its not an essential piece of gear for DI2, in my view, so 4 stars.

Reviewed 5/12/2017
Was this review useful to you? Yes/No
Thank you for your feedback.
rating
by DLinLV
Competitive Racer
Las Vegas
You NEED this!

Cant do synchro shift without this battery, and its worth the upgrade just to get synchro shift. I'm not a lazy shifter but it is convenient in a race to not have to think about the gearingcross chaining as you meet hills. Just shift!

Reviewed 5/12/2017
Was this review useful to you? Yes/No
Thank you for your feedback.
rating
by BikeJunky2
Competitive Racer
Wenatchee, WA
0 of 1 customers found this review helpful.
Awesome Deal

Great new features over previous model.

Reviewed 1/9/2017
Was this review useful to you? Yes/No
Thank you for your feedback.
rating
by Anonymous
Cycling Enthusiast
Boulder, CO
Hassle Free, fast shipping.

Not crazy about this design but I do like the wheels. Experience with Western was hassle free and parts were delivered a full day before they were scheduled to be.

Reviewed 9/18/2014
Was this review useful to you? Yes/No
Thank you for your feedback.
Best Deals
Mavic Axle Adapters
Mavic
  (11)
Axle Adapters
Low as
$7.95
Earn $0.79 store credit
Campagnolo EPS Under BB Cable Kit
Campagnolo
EPS Under BB Cable Kit
Closeout
$23.99
$59.99
Soma Fabrications 4-Gate Deep Toe Clips Pair
Soma Fabrications
4-Gate Deep Toe Clips Pair
$32.79
$39.99
Earn $3.27 store credit
Origin8 Steel Single Chainring Bolts
Origin8
  (4)
Steel Single Chainring Bolts
$9.12
$10.99
Earn $0.91 store credit
Crank Bros Long Spindle Kit (Egg Beater/Candy/Mallet)
Crank Bros
Long Spindle Kit (Egg Beater/Candy/Mallet)
$41.49
$49.99
Earn $4.14 store credit
FSA Torx T-30 Alloy Double Chainring Nut/Bolt Set
FSA
Torx T-30 Alloy Double Chainring Nut/Bolt Set
$19.99
$22.99
Earn $1.99 store credit
Diatech Star Nuts
Diatech
  (3)
Star Nuts
$3.59
$3.99
Earn $0.35 store credit
Shimano Internal Fork Steerer DI2 Battery Mount
Shimano
Internal Fork Steerer DI2 Battery Mount
$11.69
$12.99
Earn $1.16 store credit