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Product nameShimano Shimano Dura-Ace 7900 Di2  (Groupset) (2012)Shimano Shimano Dura-Ace 7900 Di2 (Groupset)Campagnolo Super Record EPS Groupset (2013)Campagnolo Super Record EPS Groupset
ManufacturerShimanoCampagnolo
CategoryGroups » PartsGroups » Parts
Approx. MSRPTBATBA
Average user ratingBe the first to write a reviewBe the first to write a review
ColorsBlack / Carbon
Year

2012

2013

Country of origin

Japan

Italy

Features

Crankset - 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.

Shifters - Dura-Ace DI2 takes Shimano shifting performance to a whole new level with SEIS (Shimano Electronic Intelligent System). In addition to uni-directional carbon fiber levers, the electronic shifters are ultra lightweight.

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.




Shifters:
ONE LEVER-ONE ACTION: each lever of the control set has its own distinct function. This means absolute certainty of using the right control in all conditions (winter temperatures and gloves, poor road conditions etc.), eliminating the risk of error.

NEW E-ERGONOMY™: the lower new position of lever 3 ensures easier, more precise shifting and derailing action in all riding positions.

100% WATERPROOF: all control components are built to operate in any weather conditions in compliance with the IP67 standard.

MULTI-DOME TECH™: the 5-dome technology perfected by Campy Tech Lab™ together with Campagnolo athletes has made it possible to strike the perfect balance between operating force and tactile shift feedback. It also eliminates the possibility of unintentionally shifting the rear or front derailleur.

SWITCH MODE BUTTON: the "mode" buttons allow the user to check battery charge, make fine adjustments to the rear or front derailleur - even in the middle of a race (with the "riding setting" procedure), and set the zero position of the rear and front derailleur ("zero setting" procedure).

DOUBLE CURVATURE BRAKE LEVER: allows you to engage and modulate the brake safely from any hand position.

VARI-CUSHION™ HOOD: made of non-allergenic elastic material, with variable cushioning that provides the maximum comfort and safety even after many hours on the bike. Thanks to a special treatment, it is resistant to UV rays and maintains its original colours without fading.

Rear Derailleur:
HIGH TORQUE, HIGH DRIVE RATIO MOTORS: Campagnolo has used the world's best electric motors for this application. These units ensure effective shifting even under strain, deliver the same performance time after time and make extremely fast, precise shifts possible.

POSITION SENSOR: the "Magnetic Hall Sensor Resolver™" ensures that the rear derailleur always moves the chain into the ideal position for the selected sprocket.

SPECIAL T.I.N. TREATMENT: this special treatment the EPS™ titanium components in their original condition, so they continue to deliver maximum performance.

UPPER AND LOWER BODY IN MONOLITHIC CARBON POWDER TECHNOPOLYMER: for maximum lightness and superlative stiffness.

FRONT ROCKER AND LINK IN CARBON FIBRE: the only electronic rear derailleur in the world made from carbon fibre. For maximum lightness and superlative maximum stiffness. For fast, precise shifts even under strain.

EXCLUSIVE "BACK HOME" SYSTEM: the manual release system lets the user position the rear derailleur and chain on the desired sprocket in the event of a drivetrain malfunction. The release system also prevents damage to the unit in a fall.

EXCLUSIVE MULTI-SHIFTING SYSTEM: lets the rider shift up or down by up to 11 sprockets in a single action!

100% WATERPROOF: all the components of the rear derailleur are built to operate in any weather conditions in compliance with the IP67 standard.

Front Derailleur:
HIGH TORQUE, HIGH DRIVE RATIO MOTORS: Campagnolo has used the world's best electric motors for this application. These units ensure effective shifting even under strain, deliver the same performance time after time and make extremely fast, precise shifts possible.

POSITION SENSOR: with the "Magnetic Hall Sensor Resolver™", the front derailleur always moves the chain automatically into the ideal position for the selected sprocket/chainring.

FRONT DERAILLEUR BODY IN MONOLITHIC CARBON POWDER TECHNOPOLYMER: for maximum lightness and superlative stiffness.

NEW INTERNAL AND EXTERNAL DERAILLER CAGE DESIGN, WITH ALUMINIUM AND CARBON FIBRE

CONSTRUCTION: a design optimised for the EPS™ drivetrain for maximised lightness and stiffness. Extreme derailing speed and precision even under strain.

100% WATERPROOF: all the components of the front derailleur are built to operate in any weather conditions in compliance with the IP67 standard.

Crankset:
TITANIUM AXLE AND REVERSE THREAD TITANIUM FIXING BOLT: reduces the overall weight of the crankset by 40 grams.

HOLLOW CRANKS AND SPIDER ARMS WITH ULTRA-HOLLOW™ TECHNOLOGY: reduced weight of stress-free sections, improved crank set weight to stiffness ratio.

8 CHAIN UP SHIFT ZONES, AND 2 CHAIN DOWNSHIFT ZONES: faster and more precise shifting, even under stress.

EXCLUSIVE CRANK/CHAINRING MOUNTING SYSTEM:
reduced weight - easy maintenance.

Crank Options:
170, 172.5, 175, 177,5, 180 mm - combination: 39-52, 39-53

170, 172.5, 175 mm - combination: 42-54, 42-55

170, 172.5, 175 mm - combination: 34-50, 52-36-

Cassette:
ULTRA-SHIFT™ TEETH DESIGN: every sprocket tooth is designed and placed to perform a specific function, like lifting or lowering the chain or giving maximum power transmission to the wheel.

REINFORCED MOUNTS FOR SECOND AND THIRD TRIPLETS: greater sprocket set rigidity - performance precision.

ULTRA-SHIFT™ SYNCHRONIZATION: the sprocket tuning allows for maximum shifting performance without hesitation: fast, precise and quiet, even under stress.

6 TITANIUM SPROCKETS: less weight.

NICKEL-CHROME SURFACE TREATMENT: reduces chain/sprocket friction - extends sprockets' life

Cassette Ratios Available:
11-23, 11-25, 12-25, 12-27, 12-29

Brakeset:
NEW LIGHTER SHOE HOLDERS: lighter

CENTRAL FULCRUM WITH BEARING SYSTEM: braking modulatation, reliability, and performance consistently maintained over time.

EXCLUSIVE BRAKE PAD COUPLING/UNCOUPLING SYSTEM: fast and secure brake pad replacement.

SPECIAL COMPOUND: reduction of braking distance in both dry and wet conditions - longer brake pad and braking track life

SKELETON BRAKE ARMS: no-bend arms, modularity, reduced weight

FRONT/REAR DIFFERENTIATED BRAKING: lighter rear brake - greater braking power modulation

DUAL PIVOT FRONT/REAR VERSION: the brake allows an enhanced braking action

Chain:
ULTRA-LINK™ CHAIN LINK CONNECTING SYSTEM:
high strength chain connection - greater safety and longer chain life

ULTRA-LINK™ CHAIN LINKS:designed to provide maximum performance to Campagnolo® transmissions: longer life for chainrings and sprockets, maximum efficiency in power transmission

SPECIAL STEEL LINKS: prolongs chain life, reduces chainrings and sprocket wear

ANTIFRICTION NI-PTFE™ TREATMENT: reduces friction, smooth pedaling, quiet operation and efficiency -prolongs chain life

Hub front

Dura-Ace Front Hub/HB-7900

Hub rear

Dura-Ace Rear Hub/FH-7900

Spokes

Shimano

Skewers

Shimano

Shifters

Dura-Ace Di2 Shift/Brake Lever for Road/ST-7970

Front derailleur

Dura-Ace Front Derailleur/FD-7970-F

Rear derailleur

Dura-Ace Di2 Rear Derailleur/RD-7970

Crankset

Dura-Ace Hollowtech II Double Crankset/FC-7900

Cassette

Dura-Ace Cassette/CS-7900

Pedals

Dura-Ace SPD-SL Pedal/PD-7810

Bottom bracket

Dura-Ace Hollowtech II Bottom Bracket/SM-BB7900

Brakes

Dura-Ace Dual-Pivot Brake Caliper/BR-7900

Chain

Dura-Ace 10-Speed Chain/CN-7900

Brake levers

Dura-Ace Di2 Shift/Brake Lever for Road/ST-7970

Recommended for

Road racing

Road Racing

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