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USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 30 - Sep 4
For Your Every Summer RSVP, with Code: SUMMER15
Description
Shimano Dura-Ace Di2 12-speed R9250 E-tube Rear DerailleurDigital integrated intelligence or di2: with programmed automatic motion at the touch of a switch the Dura Ace Di2 rear derailleur is quick, smooth and effortless, making for unmatched drivetrain efficiency. Features: The rear derailleur is now the brains of the system with wireless connectivity to the shifters. It acts as the point the system is charged, provides Ant+ connection to 3rd party devises and replaces the handlebar junction Button on the
Digital integrated intelligence or di2: with programmed automatic motion at the touch of a switch the Dura Ace Di2 rear derailleur is quick, smooth and effortless, making for unmatched drivetrain efficiency.Features:
- The rear derailleur is now the brains of the system with wireless connectivity to the shifters. It acts as the point the system is charged, provides Ant+ connection to 3rd party devises and replaces the handlebar junction
- Button on the derailleur for Di2 operations, and led light denotes synchronized shift mode, setting mode and charge requirements
- Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shift
- Synchronized shift designed, developed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur
- The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching
- Low profile shadow derailleur design
- Derailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts
- 11-34t wide gear ratio capacity will cater for compact setups as well as the traditional road double
- Full carbon fibre inner and outer pulley plates enhance rigidity and reduce weight
- Titanium b axle bolt for further weight savings
- High tolerance cold forged aluminium link plates and body construction is extremely light and durable
- Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting
- Pulleys are made of tough dupont zytel for longer life and less chain noise
- 12-speed e-tube Di2 compatible
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
It’s just an air filter
Size: CA12290-Premium
It’s exactly how it’s pictured. Not sure what else to say it’s an air filter. I guess it’s doing its job
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Good price
Size: CA12290-Premium
Fit as expected
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Very good filter
Size: CA12290-Premium
Very good filter
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Reviewed in the United States on December 3, 2025
★★★★★ 3
Not 99.9 %
Size: CA12290-Premium
Only 98% efficient. Says 99.9 in the ad. There is a huge difference between those two efficiencies.
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Reviewed in the United States on February 8, 2026
★★★★★ 5
Accord
Size: CA12290-Premium, Size: CA12290-Premium
Fit was perfect on 2018 accord, delivery fast and packaging intact.
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Reviewed in the United States on August 18, 2025