CAMPAGNOLO Super Record 12s Stages crankset with power meter

The carbon fibre Super Record™ 12x2 Speed crankset has been made lighter on the inside through Campagnolo Hollow Technology, which uses the Ultra-Torque bracket system with a titanium axle to transfer all of the force the athlete applies to the pedal to the drivetrain. The new Super Record™ 12x2 Speed crankset can be installed on any type of frame, whether or not it is being used with disc brakes because it optimises the chain line on the frame with a rear hub flange measuring 130, 135 or 142 millimetres, without affecting the Q factor, which remains constant at 145.5 millimetres thanks to the new hand crank design. The use of ceramic Cult bearings leads to obtaining the smooth ride that the Campagnolo brand is known for. The innovative design of the outer chainring ensures faster, quieter derailing owing to the contoured pin. The symmetrical design of the inner chainring teeth allows improved stability with chain crossovers. The double wheel sizing standards (112 and 145 millimetres) combined with the eight fixing screws, optimises weight and stiffness through the increased use of carbon fibre. The varying number of pins for each of the three chainring combinations (34/50, 36/52, 39/53) facilitates upshifting due to the optimised free strokes associated with each combination. The special drains on the inside of the outer chainrings optimise performance when downshifting in dead spots. Compatible with all frame systems, regardless of the width of the rear chainstay The right hand crank arms are coupled two by two in the zones subject to greater force applied by the cyclist. They provide maximum stiffness to the crankset during upshifting. Unchanged Q Factor (145.5) Both the dimensions and the pedalling biodynamics remain unchanged. Unidirectional carbon fibre hand cranks, steel axle and aluminium chainrings. Substantial stiffness and excellent power transfer. Symmetrical inner chainring teeth. Fluid and precise drivetrain, even with the greater crossovers. Optimised design for every chainring combination. Maximum performance, always. Double wheel sizing standards. Improved system stiffness and reduced weight due to increased use of carbon fibre. Superficial treatment of the chainrings for a longer lifespan. Specifications: - Weight: 618 gr. (172,5 mm, 34-50, 2 bearings assembled) Technology: Cult - Ceramic Ultimate Level Technology: - The iconic CULT - ceramic bearings for Campagnolo - are only mounted on the best cranksets and are revolutionary compared to other bearings on the market. Thanks to their properties, produced to specific Campagnolo design, CULT bearings offer extremely low friction, enabling maximum performance and energy savings when pedaling. The top-quality ceramic balls with high-precision roundness and resistance turn inside polymer cages on stainless steel races that are extremely resistant to wear and tear. These cages are designed with tolerances accurate to the micron, which maximizes their efficiency and durability. CULT bearings do not deform or corrode, ensuring long-term constant performance and product quality. Their maintenance requires only periodic cleaning and light lubrication with synthetic oil. CULT bearings have a 40% lower friction coefficient than standard sealed bearings and they roll for 5 and a half times longer in tests. CULT ceramic bearings are available for the best-known Campagnolo racing bike wheels: Bora Ultra WTO, Ghibli and Hyperon Ultra. Mps™ Micro Precision Shifting System: - Campagnolo constantly strives to achieve maximum performance from all its ranges of groupsets, from Super Record Wireless to Ekar™. The Micro Precision Shifting™ (M.P.S.™) System fully reflects this company philosophy: absolute precision, speed and a reduction of the distance covered by the chain when moving from one chainring to another. Mechanical work on the outer chainring is proof of the obsessive attention to detail and the perseverance of our Campy Tech Lab™ designers, who aim for maximum performance from all of Campagnolo’s products. The result is surprising and changing chainrings, even under load, is now no longer a problem! The evolved design of the up-shift and down-shift zones and of the teeth profile enables fast, precise shifting in any conditions. Ultra-torque™: - Lightness, stiffness, and simplified assembly: ULTRA-TORQUE™. Campagnolo® has permanently conjoined the semi-axles of the bottom bracket to the respective crankset arms. This redesign has made it possible to considerably reduce the lateral dimensions at the axle level and prevent annoying contact with the ankles when turning the pedals. Assembly couldn’t be simpler: a single oversize bolt is enough to integrate the two semi-axles. This breakthrough was achieved thanks to an ingenious mechanical system derived from many years’ experience in the coupling and rotation axle sector: the Hirth joint. This is basically a joint with self-centering, self-aligning frontal teeth positioned in the middle of the bottom-bracket axle where the ends of the semi-axles, integrated with the crankset arms, come into contact. Where torque transmission is concerned, this system is equally as effective as a single-piece axle, which therefore guarantees unrivalled power transmission. X.p.s.s.™ Extreme Performance Shifting System: - X.P.S.S.™ technology is the embodiment of a project conceived with a very specific objective: to give Campagnolo 12-speed groupsets the best possible derailing performance. The ascent and descent zones on the chainrings have been designed down to the smallest detail, using mathematical simulation programs that reproduce the potential movements of the chain on the chainrings and draw their ideal angles. Repeated lab tests have achieved the final optimization of derailing speed and precision. The chainring teeth profile has also been revised in order to make their action even more effective and to ensure they are perfectly in tune with the 12-Speed chain and derailleur. All of these product evolutions enable an increase of 25% in derailing under load and of 20% in shifting fluidity. The secret behind this amazing result is the perfect combination and integration of all the drivetrain components: each of these is carefully designed to work and function perfectly with the others. The X.P.S.S. system is a Campagnolo technology used for the Record, Chorus and Centaur mechanical groupsets for racing bikes.