SHIMANO DURA-ACE 12V R92, 172,5MM 52-36, CS11-30 DRIVETRAIN

Shimano Durace 12-speed drivetrain consisting of:

2x12-v DURA-ACE HOLLOWTECH II crankset: no watts are wasted. Thanks to the hollow cranks and chainrings the weight is kept to a minimum and the rigidity and precision of the gearing are maximized. The crankset performs two fundamental functions: it transfers pedaling effort to the drivetrain and offers the fastest and most precise chainring shifting available.
Excellent balance between stiffness, strength, weight and rotation efficiency. HOLLOWGLIDE construction reduces weight but maintains strength, for better power transfer and faster, more precise chainring.
Teeth: 52-36D. Weight (approx.): 692 gr.

126-link chain + quicklink (SM-CN910-12) and SIL-TEC treatment for greater off-road durability. Smoother ride even on rough terrain. Increased chain retention to increase the portion of the end of the inner plate that holds the chainring securely on the derailleur and sprocket set.

SHIMANO CENTER LOCK 160mm disc brake rotor: with ICE TECHNOLOGIES FREEZA technology that disperses heat to maintain braking performance even on longer downhill courses. The CenterLock mounting system allows for easy assembly/removal of the rotor thanks to the configuration with keyed couplings and locking ring. Weight (approx.): 108 gr.

SHIMANO SHADOW RD 12-v DURA-ACE Di2 rear derailleur: the fastest rear derailleur for the widest range of SHIMANO DURA-ACE gears. The system's charging port is integrated and has the wireless connection unit, for fast and precise shifting every time. The cage length is compatible with low 28-34D sprockets and offers new versatility to the world's best road component group.
DURA-ACE Di2 2x12-v front derailleur: Despite its smaller and lighter construction, the DURA-ACE FD-R9250 offers fast chainring shifting. Compared to the previous model (FD-R9150) it is 45% faster and the fontal surface has been reduced to decrease aerodynamic resistance. Weight: 96 gr.

DURA-ACE 12-v HYPERGLIDE+ sprocket set: the ultra-fluid experience of the DURA-ACE R9200 12-speed range allows you to climb, sprint and push your limits without stopping to think about the next gear change. Larger sprockets maximize drivetrain efficiency and create compatibility with SHIMANO 11 and 12v hub bodies. In any gear, DURA-ACE R9250 transmissions maximize efficiency with larger sprockets and maintain compatibility with existing 11-speed rear hub bodies. All this by shifting to 12 gears and with no increase in weight, DURA-ACE CS-R9200 cassettes are the new frontier for road bikes.

DUAL CONTROL brake levers for conventional 2x12-v DURA-ACE Di2 brakes: the dual control levers, for conventional brakes, DURA-ACE ST-R9250, have refined ergonomics and are very light. These levers represent the ultimate in reliability thanks to a wired connection and the lightness of conventional brakes.
Fast and intuitive shifting with well-defined confirmation click and ergonomic shift lever. The shape and consistency of the handguard optimize grip and transmission of braking power. Weight: 230 gr (the pair).