Product ReviewsShimano 3-Port Junction A Under Stem Mount - Black

Reason why I like the normal junction

I prefer the underbar mount to the pain in the rear end bar end mount which requires special wiring and usually through bar no exposed wires which are only available on new bikes.

Verified purchase:  Yes | Condition: pre-owned | Sold by: buycyclestuffon...

Works as advertised

This is the 4th conversion to Di2 that I have made on bikes with this unit. They all have worked well, without issues.

Two thumbs up

All good!!

Verified purchase:  Yes | Condition: new | Sold by: random.bike.parts

excelente compra

muy buen producto

Verified purchase:  Yes | Condition: pre-owned | Sold by: roysbrooklynbikes