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EX1 X-HORIZON™ REAR DERAILLEUR

The EX1 derailleur capitalizes on the robust build and precise shifting attributes of the X-HORIZON™ design, to create the world’s first derailleur specifically made for E-MTBs. Engineered to handle high-torque, low-cadence shifting across the 11-48 tooth E-BLOCK™ cassette, the EX1 derailleur gives E-MTB riders clean, confident shifts, so they can spend more time enjoying the ride.

  • Proven SRAM X-HORIZON™ design that reduces shift force, ghost shifting and chain slap
  • 12-tooth X-SYNC™ pulley wheels
  • The EX1 derailleur is purpose built for E-MTB

MSRP*
USD: $142
Euro: €165
Euro MSRP includes VAT

Please see our Product Authentication Warning

Some variations of this product featured on this page are not available for purchase and are installed on bicycles as original equipment only. See your dealer for details.

*Maximum Suggested Retail Price

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Specs

Specifications for EX1 X-HORIZON™ REAR DERAILLEUR

Speeds8
Weight289g
ColorsBlack
Outer CageAluminum
Inner CageAluminum
BearingsSteel
Cage SizesMedium
Max Tooth48
PullX-ACTUATION™
Technology Highlight(s)X-HORIZON™, X-SYNC™, CAGE LOCK™, ROLLER BEARING CLUTCH™, X-ACTUATION™
Retail AvailabilityJuly 2016

Technology

CAGE LOCK™

With CAGE LOCK™ technology in the rear derailleur, wheel removal and installation—as well as chain installation—becomes faster and simpler. Just pushing the cage forward to create slack and lock it into place.

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ROLLER BEARING CLUTCH™

ROLLER BEARING CLUTCH™ rear derailleurs deliver maximum drivetrain stability—even through the most punishing terrain. With ROLLER BEARING CLUTCH™ technology, derailleur bounce and chain slap are eliminated without sacrificing precision.

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X-ACTUATION™

Developed specifically for SRAM 1x™, X-ACTUATION™ keeps shifting sharp and consistent across the entire cassette.

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X-HORIZON™

The X-HORIZON™ rear derailleur’s ‘straight parallelogram’ design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley offset design maintains a constant chain gap across all gears.

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X-SYNC™

SRAM X-SYNC™ 1x chain rings provide the highest level of performance and durability. The SRAM X-SYNC™ tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC™ chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC™ rings are an integral part of the SRAM 1x™ drivetrain.

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Service

Documents Available for EX1 X-HORIZON™ REAR DERAILLEUR

See more documents available for SRAM MTB products.


SRAM Warranty (2.19 MB, PDF)

EN, DE, ES, FR, IT, NL, PT, JA, ZH, PL, DA, CS, EL, RO, FI, SV, GA, BG, MT, SK, SL, HU, ET, LV, LT, KO, RU
28 Pages Updated June 16, 2015

Video


Reviews

Industry Reviews

Reviews
SRAM EX1 | MTB-Mag.com | April 2016

"The use of eight gears was ideal: we did not feel the need for more."

"This is a big change compared to our previous experiences."

"EX1 will definitely improve the shifting experience on pedal assist bikes."

by Alex Boyce, MTB-MAG.com, May 17, 2016