Shimano XTR M9100 1×12-speed Upgrade-Kit 10-45 I-Spec EV – MTB Group Sets


Shimano XTR M9100 1×12-speed Upgrade-Kit 10-45 I-Spec EV

Designed to meet the highest level competitive mountain bike racing needs with a second to none performance and experience. New Shimano XTR M9100 Series brings the most versatile groupset for XC, enduro and marathon racing.

12-speed of a new generation: XTR M9100 from Shimano

In Mountain bike riding, trail conditions change drastically from one second to the next, from one turn to the next. Mountain bikers need to be able to seamlessly Perceive the conditions, Judge their options, and Operate their bike in a split second. XTR satisfies the needs of the most demanding riders by providing the highest level of precision and integration. We refocused on the original goal of XTR – to be the ultimate race components.

Scope of delivery – XTR M9100 1×12-speed Upgrade-Kit 10-45 I-Spec EV


  • XTR SL-M9100 12-speed Shift Lever with I-Spec EV right
  • XTR RD-M9100 12-speed Rear Derailleur GS
  • XTR CS-M9100 12-speed Cassette 10-45
  • CN-M9100 12-speed Chain 116 Links with Quick-Link

The Shimano XTR SL-M9100-I 12-speed Rapidfire Plus shift lever features a lightweight, ergonomic and compact design. In addition to the shifting behavior, the performance also increases. With 20 % quicker lever access time and 35 % less force. Enhancing lever access and shifting speed, the new RAPIDFIRE PLUS shift levers offer light operation force and more versatility. Shimano’s new I-Spec EV lever design features greater flexibility in mounting for a clean and ergonomic cockpit. And for double chainring systems, the lever simplifies front shifting with a lightweight and compact design that shifts up and down with a single lever.

The Shimano XTR RD-M9100 12-speed rear derailleur features an elegant yet aggressive angled design and an attractive anodised aluminium surface. The derailleurs feature bigger 13-tooth pulleys and include Shimano’s proven Shadow RD+ low profile technology. The use of a single or a double system requires the installation of the specific single or double rear derailleur (1x: RD-M9100-GS/SGS, 2x: RDs-M9120-SGS), whereby one version with medium-length (10-45T) or long cage (10-51T) is available for single systems.
The Shimano CS-M9100 is the suitable cassette for new XTR 12-speed group. Hyperglide+ is your new best friend! Fast shifting, power transfer and stability like you’ve never experienced. How do you make it it lighter, more durable and more rigid, lesson number one: use alloy, steel and titanium together.
The special design of the new Shimano CN-M9100 12-speed chain ensures improved shifting performance and smoother running – even in rough terrain. The SM-CN910-12 Quick-Link closure, which is also new, makes installation easy.

Features – XTR SL-M9100 I-Spec EV 12-speed Shift Lever right

  • I-Spec EV – securing the shift lever on the brake lever
  • 20% quicker lever access time
  • Compact design and lightweight
  • Quicker lever access and light operation force maintains rider concentration
  • Greater flexibility and action-optimized cockpit layout
  • Mode Converter for the conversion from 12-speed to 11-speed Wide Flange (right side shifter only)
  • 2-WAY RELEASE for instant push/pull movements

Product features

  • Use: MTB
  • Group: XTR M9100
  • Model: RD-M9100-IR
  • Shifter Type: Rapidfire Plus
  • Mounting: I-Spec EV
  • Gear rear: 12-speed
  • Optical Gear Display: No
  • Instant Release: Yes
  • Multi Release: Yes
  • 2-Way Release: Yes
  • Cable adjust: Yes


  • Main lever body: Aluminum Painted
  • Lever body: Aluminium, GFRP


  •  117g (manufacturer information)

Scope of delivery

  • 1 Shimano XTR SL-M9100 I-Spec EV 12-speed Shift Lever right
  • 1 Shimano gear wire 2050mm
  • 1 Shimano gear cable SIS OT-SP41 1800mm
  • End caps

Features – XTR RD-M9100 12-speed Rear Derailleur

  • Shadow RD+ For optimal chain retention
  • RD-M9100-GS
    • 45T max cog size
    • Works with 12-speed 10-45-teeth cassette (11-speed Wide Flange compatible)
    • Better ground clearance (28mm shorter cage)
  • Pulley size with 13T increased for reduced friction

Product features

  • Use: MTB
  • Group: XTR M9100
  • Model: RD-M9100
  • Mount: Direct Mount
  • Technology: Shadow RD+
  • Gradations: GS-Type 1×12-speed (10-45 cassette)
  • Compatible chain: CN-M9100 12-speed
  • Max. teeth large sprocket: 45T
  • Min. teeth large sprocket: 45T
  • Max. teeth small sprocket: 10T
  • Min. teeth small sprocket: 10T
  • Max. Front Difference: 0T
  • Total Capacity: 34T

Pulley cage

  • Type-GS medium


  • Aluminum
  • GFRP
  • Stainless steel
  • Steel


  • 237g (manufacturer information)

Scope of delivery

  • Shimano XTR 12-speed Rear Derailleur RD-M9100 GS

Features – XTR CS-M9100 12-speed Cassette 10-45

  • Gearing: 10-45T (12-speed rhythm step spec for Cross Country)
  • Hyperglide+ 30% quicker shifting
  • Material Titanium, aluminium & steel
  • BEAM SPIDER construction Increased acceleration
  • Compatibility 1x or 2x chainring systems

Product features

  • Use: MTB
  • Group: XTR M9100
  • Model: CS-M9100-12
  • Type: Hyperglide+
  • Gear: 1×12-speed / 2×12-speed
  • Compatible chain: CN-M9100 12-speed


  • 10-45 (10-12-14-16-18-21-24-28-32-36-40-45 teeth)


  • Aluminium spider arm
  • Titan (5 spockets)
  • Aluminium (3 spockets)
  • Steel (4 sprockets)
  • Aluminum lock-ring


  • 349g (manufacturer information)

Scope of delivery

  • Shimano XTR 12-speed Cassette CS-M9100 10-45 incl. Lock Ring Aluminum

Features – CN-M9100 12-speed Chain 116 Links with Quick-Link SM-CN910-12

  • New Drive System Dedicated Design Chain
  • Greater chain retention to extend portion on the end of inner plate to firmly hold the tooth both front and cassette sprocket
  • Enhancements to shifting performance
  • Easy connect
  • Smoother driving even over bumpy terrain
  • Compatible with new generation of drive train
  • Quick-Link (SM-CN910-12)
  • Quick-Link connecting & removing pliers (TL-CN10) – Not included!

Product features

  • Use: MTB, E-Bike
  • Group: XTR M9100
  • Model: CN-M9100
  • Gear front: 1/2-speed
  • Gear rear: 11-speed (Wide Flange) / 12-speed
  • Type: HG
  • Hollow Pin: Yes
  • Pin Link Plate: SIL-TEC
  • Roller Link Plate: Chromizing
  • Roller: SIL-TEC
  • Connector: Quick-Link SM-CN910-12


  • XTR M9100
  • 12-speed E-Bike


  • 116


  • approx 250g (116)

Scope of delivery

  • 1 Shimano CN-M9100 12-speed Chain 116 Links incl. Connector Quick-Link SM-CN910-12


Instant Release
INSTANT RELEASE shifting replaces the two-stage click and release shifting you are familiar with. INSTANT RELEASE shifting releases cable as soon the lever is activated, resulting in the quickest possible gear changes. Whether it is an upshift with a Top Normal rear derailleur or a downshift with low normal rear derailleur a quicker shift is always a better shift.
Multi Release
Previous shifting systems shifted faster in one direction than the other. Choosing Top Normal or low normal always meant sacrificing shifting speed in one direction. Now with MULTI RELEASE you can release shift two gears in one stroke. The result – the fastest possible shifting in both directions regardless of rear derailleur choice.
2-Way Release
The RAPIDFIRE Plus shifter release lever is commonly called a trigger because it is operated like a pistol, by pulling toward the grip. The release lever of RAPIDFIRE Plus shifters from ALIVIO to XTR can be operated in this same manner but adds the ability to activate a release shift by pushing with the thumb.
Rapidfire Plus
Mountain bikers have used RAPIDFIRE Plus since 1985. RAPIDFIRE Plus is still a winning choice from a wide range of riders from XC racers to freeriders. RAPIDFIRE Plus is suited to quick shifting, giving riders the ability to downshift three gears in one stroke. RAPIDFIRE Plus shifters from DEORE to XTR all feature 2-WAY RELEASE, which means release shifts by pull of the index finger or push of the thumb.
SKU: MTBG2020102534 Categories: ,