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Shimano Shimano Dura-Ace 7900 Di2 - TT/TRI (Groupset)


Product Category
Brand Shimano
ModelShimano Dura-Ace 7900 Di2 - TT/TRI (Groupset)
ColorBlack, Carbon, Silver


Bottom bracketDura-Ace Hollowtech II Bottom Bracket/SM-BB7900
Brake leversDura/Ace Di2 Shift/Brake Lever for TT/Triatlon/ST-7971
BrakesDura-Ace Dual-Pivot Brake Caliper/BR-7900
CassetteDura-Ace Cassette/CS-7900
ChainDura-Ace 10-Speed Chain/CN-7900
CranksetDura-Ace Hollowtech II Double Crankset/FC-7900
FeaturesCrankset - This sleek aerodynamic Dura-Ace Hollowtech II crankset features significant weight saving and increased rigidity through the use of a 20% stiffer chainring, resulting in optimal shifting & power transfer. Brakes - The Dura-Ace 7900 brakes present a new, durable shoe compound that produces 210% the stopping power in wet condition, 120% in dry conditions and 50% longer wear. Cassette - Featuring four titanium cogs, the new Dura-Ace 7900 cogset has further improved shifting quality by creating a more rigid aluminum carrier unit along with a re-engineered tooth profile. Shimano also successfully reduced the weight of the rear wheel assembly by 10 grams. Chain - The asymmetric design of the 10-speed Dura-Ace chain improves shifting precision and smoothness due to different inner and outer plate chamfers and dimensions. While still saving weight without giving up strength, this chain offers higher durability, silent pedaling, and reduced chain drop even under intense pressure. Wheelset - Shimano Dura-Ace wheels are designed to balance key design elements to deliver the best riding wheels for intended design use. Through a balanced design of dependability - stiffness vs. compliance - torsional & lateral rigidity - aerodynamics - weight, the best riding wheelsets in six purpose driven wheel designs. Pedals - DURA-ACE SPD-SL Pedals are designed to provide optimum stability and efficiency so you can focus on the road. Bottom Bracket - The Dura-Ace Hollowtech II bottom bracket offers a wider bearing space for superior stability and an improved seal design for longer durability. Hubs - Digital click adjust for better rotation performance. Enhanced rigidity toward the compression direction for better rotation even when quick release is on tight. Tri / TT Shifters - Designed exclusively for triathletes and time trialists, the new system eliminates the need to change hand positions during shifting. Riders can change gears at the base bar (ST-7971) as well as the bar extensions (SW-7971) because the system in linked. Rear Derailleur - Through SEIS, the electronic rear derailleur is the fastest & most precise shifting available for the road. In addition, the carbon pulley plate is lightweight and rigid while adding a dash of style. Front Derailleur - The front derailleur contains the shifting logic and enables the shifters to stay in constant communication with the whole system. Front shifting is the most perfect front shift available today. With automatic micro-trim adjustments, the chain is kept perfectly aligned and quiet.
Front derailleurDura-Ace Front Derailleur/FD-7900-F
Hub frontDura-Ace Front Hub/HB-7900
Hub rearDura-Ace Rear Hub/FH-7900
PedalsDura-Ace SPD-SL Pedal/PD-7810
Rear derailleurDura-Ace Di2 Rear Derailleur/RD-7970
Recommended forRoad Time Trial, Triathlon
ShiftersDura/Ace Di2 Shift/Brake Lever for TT/Triatlon/ST-7971
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