Shimano Goes BIG - New 12-Speed 1X XTR Drivetrains, Brakes and More 8

1X drivetrains have been on the rise since the introduction of SRAM's XX1 drivetrain system in 2012. Today they are enjoyed by a large percentage of mountain bikers for their simplicity, clean appearance, ease of use, and improved chain retention. Looking back, it took Shimano a little while to jump on the band wagon. With the introduction of the new M9100 groupset and its 10-51 tooth cassette, it's clear they're fully onboard – and the chain promises to be as well thanks to improved retention technologies. Yes, there's still a 2X option for those seeking "ideal gear steps."

Presented below in Shimano's words are the individual components that make up the system. Mix and match to meet your needs. Meet the new XTR.

XTR M9100 Options

For double chainring systems, the lever simplifies front shifting with a lightweight and compact design that shifts up and down with a single lever. 

SL-MT800-IL

SHIMANO introduces its first seatpost dropper remote and it features ideal ergonomics where other dropper levers fall short. It enables quick adjustment with a lighter and more natural feel and is compatible with most dropper posts on the market since the cable clamps at the lever end. The dropper remote can be installed in the same position as a left shift lever using Shimano’s I-SPEC EV system design and offers 7mm of cable stroke. 

Drivetrain Pricing and Weights

Brakes

Further improving Shimano’s legendary mountain bike braking system, new XTR increases brake rigidity for greater bike control and optimizes braking performance for different riding styles. The 2-piston XC brake system offers a lightweight package with high rigidity while the Enduro-style 4-piston design prioritizes power and smooth braking feel. 

To improve rigidity at the lever, Shimano moved the brake clamp position inboard, creating an extra point of contact between the bar and the lever. This added bracing drastically increases efficiency and control over the bike while offering quick brake engagement. The new design minimizes impact on cockpit real estate, creating space between the clamp and support point for mounting other handlebar accessories. 

BL-M9100 and BR-M9100 

• Lightweight XC brake design
• 26 grams lighter than M9000 including RT-MT900 rotors
• 10% more rigid 
• 2-piston hydraulic brake caliper

BL-M9120 and BR-M9120

The new Enduro-specific, 4-piston design features the same brake power rating as Shimano Saint (BR-M820) brakes with greater modulation tuned for Enduro riding.

• Powerful Enduro brake design
• 4-piston hydraulic brake caliper 
• Uses new XTR finned pads or Saint brake pads

RT-MT900

The new Ice-Technologies Freeza rotor construction boosts heat dissipation by 20 degrees Celsius thanks to a heat-dissipating paint on exposed aluminum layer segments.  

• 140mm and 160mm rotor optimized for XC and focused on weight reduction
• 180mm and 203mm rotor optimized for enduro and focused on cooling

Brake Pricing and Weights

Pedals

PD-M9100

The new M9100 XC pedals improve rider stability with wider edge-to-edge contact areas while improving mud shedding through rounded contact points and off-set bindings. Shimano’s Rider-Tuned design offers two axle length options including a new 3mm shorter axle to minimize the Q-factor for XC riders who are running Boost drivetrains. This new shorter axle also matches the Q-factor of Shimano’s SPD-SL road pedals, providing a smooth transition for road riders diving into gravel. 

• Two axle length options: 52mm and 55mm
• Wider edge-to-edge platform
• Step in and out consistency
• Offset binding for improved mud shedding
• 1mm cleat spacer included
• Weight: 310g (52mm), 314g (55mm)

PD-M9120

A wider contact area on the new M9120 trail and enduro pedals improves stability while the expanded rearward shoe-pedal contact area better accommodates the sneaker-style flat outsoles used in enduro and gravity riding. The Rider Tuned 1mm cleat spacer creates a better interface with shoes of varying outsole design and lug height. 

• Wider contact area than PD-M9020
• Expanded rearward shoe-pedal contact area
• 1mm cleat spacer included
• Weight: 398g

Pedal Pricing and Weights

XTR M9100 series components will be available in Fall 2018. Visit www.ridextr.com for more details, and keep an eye out for upcoming Vital MTB reviews.