Shimano Dura-Ace ST-R9250-L Di2 Dual Control Shift/Brake Lever Rim Brakes - Left 2x BLK MFPN=W010-1064 DUB technology simplifies the relationship

DUB technology simplifies the relationship of the spindle to the bottom bracket

you can move the position of your cross country ski binding (sold separately) backward and forwards

Lightweight materials allow the guard to hug your ankle while the strategically placed protective elements guard against all the crank bites and frame tags that modern riding dishes out

Forged alloy arms

}Cane Creek Progressive Rate VALT Lightweight Rear Shock Spring - 65mm x 400-488lbs White

Shimano Dura-Ace ST-R9250-L Di2 Dual Control Shift/Brake Lever Rim Brakes - Left 2x BLK MFPN=W010-1064 DUB technology simplifies the relationshipShimano Dura Ace ST R9250 dual control levers are the ultimate in reliable performance thanks to a wired connection to the rim brakes. Refined ergonomics and advanced materials show the race pedigree of these levers. Quick and intuitive 12 speed Di2 shifting Clearly defined click feeling with ergonomic shifting lever Better bike control and confidence in race conditions Hood shape and texture optimize grip and brake power transmission Brake Lever