Deore XT BL-M8100 Disc Brake Lever

Name: Thunder Mountain Bikes Deore XT BL-M8100 Disc Brake Lever - Deore XT BL-M8100 Disc Brake Lever
Brand: Thunder Mountain Bikes
SKU: 41976488591595
Price: 54.6 USD
Availability: InStock
Rating: 4.9483 (43 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$54.60$65.00

16% off

Quantity

Color

Black

Quantity

Servo Wave XT mechanism enables quick pad engagement for responsive braking
Forged alloy construction ensures strength and reliability for demanding rides
Adjustable free stroke allows fine-tuning of lever pull for optimal control
Hinged clamp design allows for fast, tool-free installation
Compatible with both 2-piston and 4-piston Deore XT brake calipers

Summarized by Shop

4.9

58 ratings

Fast shipping and you get free sticker which is SO rare nowdays

Ricardo · June 18, 2026

Trust. These. Guys!

Easy replacement, perfect service.

Alex · April 8, 2026

Cheap and fast. My new go to for parts

Luke · March 13, 2026

Returns accepted within 60 days

Exclusions may apply. See full policy

Thunder Mountain Bikes

4.9 (3.5K)

Product description loading

This is the product description text that will appear here.

16% off

Thunder Mountain Bikes

BH90 Olive & Barb (Connecting Insert)

(14)

$3.36$4.00

Shimano ICE Technologies mountain bike disc brake rotor with vented design for trail riding performance

16% off

Thunder Mountain Bikes

Deore XT SM-RT86 Disc Brake Rotor

(19)

$50.40$60.00

16% off

Thunder Mountain Bikes

GX Eagle XG-1275 Cassette

(8)

$214.20$255.00

16% off

Thunder Mountain Bikes

Deore XT SL-M8100 Shift Lever

(10)

$63.00$75.00

OneUp Components US

4.8

(8.1K)

15% off

Thunder Mountain Bikes

Deore XT Crank Arms

(24)

$157.25$185.00

SRAM GX rear derailleur for mountain bikes, black and silver, precise gear shifting component

Thunder Mountain Bikes

Eagle 90 Transmission Rear Derailleur

(5)

$210.00

Brass bike tubeless valve stems with red O-rings, compatible with mountain bike tires and rims

Thunder Mountain Bikes

5.0mm Olive and Barb (TRP)

(4)

$1.99

Renthal Fatbar 35 mountain bike handlebar, black, for trail and enduro riding

19% off

Thunder Mountain Bikes

Fatbar V3 Handlebar

(76)

$87.18$107.85

16% off

Thunder Mountain Bikes

Deore BR-M6120 Disc Brake Caliper

(13)

$63.00$75.00

12% off

Thunder Mountain Bikes

X01 Eagle XG-1295 Cassette

(8)

$399.67$455.00

TRP Cycling

4.8

(413)

TRP 4-piston resin disc brake pads for quiet operation and excellent modulation

TRP R220 large disc brake rotor 220mm for extreme mountain bike and e-bike braking applications

12% off

Thunder Mountain Bikes

NX Eagle PG-1230 Cassette

(5)

$105.60$120.00

Thunder Mountain Bikes

Shimano Crank Arm Protector Boots

(11)

$12.00

Steed Cycles

Shimano BL-M8100 Deore XT Brake Lever

(1)

CA$82.99

32% off

Thunder Mountain Bikes

Deore XT BL-M8100 Brake Lever Blade

(56)

$22.99$34.00

16% off

Thunder Mountain Bikes

SLX BL-M7100 Disc Brake Lever

(39)

$41.16$49.00

Wolf Tooth Components

4.9

(924)

3,5,10,15mm Kit / Black Precision Headset Spacers

Aluminum - 4 pcs. / Olive Water Bottle Cage Bolts

SRAM brake lever for mountain bikes, black with orange accents, featuring free stroke adjustment

16% off

Thunder Mountain Bikes

Saint BL-M820-B Disc Brake Lever

(4)

$84.00$100.00

16% off

Thunder Mountain Bikes

Deore XT RD-M8100 Rear Derailleur

(12)

$121.80$145.00

Black rubber bike handlebar end plug for mountain bikes

16% off

Thunder Mountain Bikes

BH90-SS Brake Lever Hose Cover

(1)

$1.68$2.00

Thunder Mountain Bikes

Eagle 90 Transmission Trigger Shifter

(2)

$55.00

MTX mountain bike brake pad with gold backing and black friction material for reliable stopping power

Thunder Mountain Bikes

Gold Label HD Brake Pads - Shimano/TRP 4-Piston

(9)

$34.99

Thunder Mountain Bikes

Mineral Brake Oil

(4)

$8.99

Prickly Motorsports

4.9

(5.6K)

16% off

Thunder Mountain Bikes

Universal Derailleur Hanger (UDH)

(11)

$16.80$20.00

Shimano mountain bike disc brake rotor with sleek design and ventilation slots

Thunder Mountain Bikes

Deore XT RT-CL800 CenterLock Disc Brake Rotor

(1)

$70.00

Thunder Mountain Bikes

GX Eagle Transmission Flattop Chain

(6)

$60.00

Bike brake bleed kit with mineral oil, syringes, adapters, and tools for mountain bike maintenance

16% off

Thunder Mountain Bikes

Pro Mineral Oil Bleed Kit - V3

(5)

$117.60$140.00

Thunder Mountain Bikes

GX Eagle Transmission Cassette (XS-1275)

(3)

$275.00

The Lost Co.

4.9

(1.4K)

Enduro MAX Bearings - The Lost Co. - Enduro - 3802LLUMAXBO - 810191011675 - 3802 -

Fox Shock Mounting Hardware - The Lost Co. - Fox Racing Shox - 803-03-256 - 0821973390277 - m6x19 -

RockShox Rear Shock Mounting Hardware - The Lost Co. - RockShox - 11.4118.091.602 - 710845867736 - m6x19 -

SRAM HS2 Disc Brake Rotor 6-Bolt - The Lost Co. - SRAM - 00.5018.176.000 - 710845862328 - 160mm -

16% off

Thunder Mountain Bikes

Deore XT BR-M8120 Disc Brake - 4 Piston

(4)

$222.60$265.00

11% off

Thunder Mountain Bikes

GX Eagle Chain

(14)

$39.87$45.00

31% off

Thunder Mountain Bikes

J04C-MF Disc Brake Pads - Metal/Composite

(3)

$29.87$43.00

16% off

Thunder Mountain Bikes

BH59 Olive & Barb (Connecting Insert)

(6)

$3.36$4.00

Thunder Mountain Bikes

XTR CN-M9100 (M9200) Chain - 12-Speed

(10)

$85.00

PNW Components

4.9

(776)

Shimano black mountain bike shifter hood cover for trail riding comfort

16% off

Thunder Mountain Bikes

BH90-SBM Brake Lever Hose Cover

$1.68$2.00

Thunder Mountain Bikes

ShiftMount Adapter

(2)

$29.99

16% off

Thunder Mountain Bikes

XTR RT-MT905 Disc Brake Rotor

(16)

$84.00$100.00

16% off

Thunder Mountain Bikes

Professional Disc Brake Bleed Kit

$67.20$80.00

44% off

Thunder Mountain Bikes

Deore XT BL-M8000 Brake Lever Blade

(5)

$17.97$32.00

16% off

Thunder Mountain Bikes

AXS / eTap Derailleur & Seatpost Battery

(9)

$54.60$65.00

Race Face

4.7

(1.1K)

The Bike Shop

Deore XT BL-M8100 Brake Lever

CA$82.99

16% off

Thunder Mountain Bikes

SM-BH90-SBM Brake Hose Kit

(3)

$41.16$49.00

Backyard golf training

Practice nets, hitting mats, and putting mats.

16% off

Thunder Mountain Bikes

GX Eagle Trigger Shifter

(7)

$46.20$55.00

20% off

Thunder Mountain Bikes

Eagle Transmission PowerLock Chain Link

(7)

$3.99$4.99

30% off

Thunder Mountain Bikes

Eagle PowerLock Chain Link

(11)

$3.49$4.99

16% off

Thunder Mountain Bikes

SLX Crank Arms

(19)

$109.20$130.00

16% off

Thunder Mountain Bikes

English/BSA Threaded DUB Bottom Bracket

(6)

$243.60$290.00

Colorful mountain bike brake levers in black, silver, gold, red, purple, blue, green for trail riding upgrades

25% off

Thunder Mountain Bikes

SH (Shimano) Lever Blade Set

(1)

$149.87$199.99

Better Bolts

4.9

(2K)

Shimano Deore XT mountain bike brake lever with ergonomic design and silver branding

16% off

Thunder Mountain Bikes

Deore XT BL-M8200 Disc Brake Lever

$88.20$105.00

High-performance mountain bike cassette with 12-speed gear range, ideal for trail riding and bike upgrades.

Thunder Mountain Bikes

Deore XT M8200 Cassette

(5)

$195.00

28% off

Thunder Mountain Bikes

D03S-RX Disc Brake Pads - Resin/Steel

(4)

$23.73$33.00

9% off

Thunder Mountain Bikes

Minion DHF Tire

(10)

$53.00$58.00

16% off

Thunder Mountain Bikes

PressFit DUB Bottom Bracket

(3)

$42.00$50.00

Thunder Mountain Bikes

X01 Eagle Rear Derailleur

(12)

$235.00

12% off

Thunder Mountain Bikes

Deore XT BR-M8120 Disc Brake Caliper

(5)

$127.93$145.00

29% off

Thunder Mountain Bikes

N04C-MF Disc Brake Pads - Metal/Composite

(32)

$39.99$56.00

Black mountain bike brake lever with spring, compatible with MTB and trail bikes

20% off

Thunder Mountain Bikes

SLX BL-M7100 Brake Lever Blade

(50)

$19.97$25.00

Rock climbing essentials

Shoes, apparel, and chalk systems.

15% off

Thunder Mountain Bikes

N03A-RF Disc Brake Pads - Resin/Aluminum

(15)

$39.91$47.00

Thunder Mountain Bikes

Original Tire Sealant

(1)

$3.99

9% off

Thunder Mountain Bikes

Minion DHR II Tire

(18)

$53.00$58.00

17% off

Thunder Mountain Bikes

XX1 Eagle XG-1299 Cassette

(23)

$439.20$530.00

Red MTX mountain bike brake pad with metallic friction surface for reliable stopping power

Thunder Mountain Bikes

Red Label Race Brake Pads - Shimano/TRP 4-Piston

(8)

$34.99

32% off

Thunder Mountain Bikes

D02S-MX Disc Brake Pads - Metal/Steel

(7)

$22.57$33.00

Outbound Lighting

4.9

(5.6K)

Quick release handlebar mount for Outbound bike lights with its shim, side view

Action camera quick release mount adapter for Outbound bike lights, side view

Wide helmet mount base for bike helmet lights, top view showing the ribbed wings

Thunder Mountain Bikes

X01 Eagle Chain

(6)

$75.00

16% off

Thunder Mountain Bikes

BH90-SBLS Brake Lever Hose Cover

$2.52$3.00

Shimano TL-FC41 bottom bracket tool for mountain bike maintenance, made in Japan

16% off

Thunder Mountain Bikes

TL-FC41 Direct Mount Chainring Lockring Tool

(2)

$24.36$29.00

Thunder Mountain Bikes

X01 Eagle Trigger Shifter

(10)

$105.00

12% off

Thunder Mountain Bikes

Deore BL-M6100 Disc Brake Lever

(56)

$26.40$30.00

15% off

Thunder Mountain Bikes

XX1 Eagle Chain

(44)

$89.25$105.00

11% off

Thunder Mountain Bikes

GX Eagle Rear Derailleur

(8)

$133.87$150.00

Shimano SM-RT66-S 160mm mountain bike disc brake rotor with orange warning label

16% off

Thunder Mountain Bikes

SLX SM-RT66 Disc Brake Rotor

(15)

$30.24$36.00

16% off

Thunder Mountain Bikes

XTR SM-CN910-12 Quick Link - 2 Pack

(7)

$15.12$18.00

Post-workout recovery

Wraps, compression sleeves, and foam rollers.

9% off

Thunder Mountain Bikes

GX Eagle DUB Crankset

(78)

$146.00$160.00

Thunder Mountain Bikes

Deore XT CN-M8100 (M8200) Chain

(8)

$62.00

17% off

Thunder Mountain Bikes

Deore XT SM-CRM85 Chainring - 12-Speed

(8)

$66.21$80.00

Shimano BB-MT801 sealed cartridge bottom bracket for mountain bikes

16% off

Thunder Mountain Bikes

Deore XT Bottom Bracket

(11)

$36.96$44.00

Shimano Deore XT mountain bike brake levers and calipers with brake fluid and pads

Thunder Mountain Bikes

Deore XT BR-M8220 Brake Upgrade Kit

(5)

$530.00

16% off

Thunder Mountain Bikes

HS2 6-Bolt Disc Brake Rotor (2.0mm)

(12)

$50.40$60.00

Freedom Coast

4.9

(589)

Full Cycle

Shimano Deore XT BL-M8100 Disc Brake Lever

(4)

$62.00

Total Bleed Solutions

Shimano Deore XT BL-M8100 XT Brake Lever, Right Hand

(1)

$67.00

Deore XT BL-M8100 Disc Brake Lever

Highlights

Description

Specifications

Reviews4.9(58)

Delivery & Returns

Thunder Mountain Bikes

You might also like

BH90 Olive & Barb (Connecting Insert)

Deore XT SM-RT86 Disc Brake Rotor

GX Eagle XG-1275 Cassette

Deore XT SL-M8100 Shift Lever

OneUp Components US

Deore XT Crank Arms

Eagle 90 Transmission Rear Derailleur

5.0mm Olive and Barb (TRP)

Fatbar V3 Handlebar

Deore BR-M6120 Disc Brake Caliper

X01 Eagle XG-1295 Cassette

TRP Cycling

NX Eagle PG-1230 Cassette

Shimano Crank Arm Protector Boots

Shimano BL-M8100 Deore XT Brake Lever

Deore XT BL-M8100 Brake Lever Blade

SLX BL-M7100 Disc Brake Lever

Wolf Tooth Components

Saint BL-M820-B Disc Brake Lever

Deore XT RD-M8100 Rear Derailleur

BH90-SS Brake Lever Hose Cover

Eagle 90 Transmission Trigger Shifter

Gold Label HD Brake Pads - Shimano/TRP 4-Piston

Mineral Brake Oil

Prickly Motorsports

Universal Derailleur Hanger (UDH)

Deore XT RT-CL800 CenterLock Disc Brake Rotor

GX Eagle Transmission Flattop Chain

Pro Mineral Oil Bleed Kit - V3

GX Eagle Transmission Cassette (XS-1275)

The Lost Co.

Deore XT BR-M8120 Disc Brake - 4 Piston

GX Eagle Chain

J04C-MF Disc Brake Pads - Metal/Composite

BH59 Olive & Barb (Connecting Insert)

XTR CN-M9100 (M9200) Chain - 12-Speed

PNW Components

BH90-SBM Brake Lever Hose Cover

ShiftMount Adapter

XTR RT-MT905 Disc Brake Rotor

Professional Disc Brake Bleed Kit

Deore XT BL-M8000 Brake Lever Blade

AXS / eTap Derailleur & Seatpost Battery

Race Face

Deore XT BL-M8100 Brake Lever

SM-BH90-SBM Brake Hose Kit

GX Eagle Trigger Shifter

Eagle Transmission PowerLock Chain Link

Eagle PowerLock Chain Link

SLX Crank Arms

English/BSA Threaded DUB Bottom Bracket

SH (Shimano) Lever Blade Set

Better Bolts

Deore XT BL-M8200 Disc Brake Lever

Deore XT M8200 Cassette

D03S-RX Disc Brake Pads - Resin/Steel

Minion DHF Tire

PressFit DUB Bottom Bracket

X01 Eagle Rear Derailleur

Deore XT BR-M8120 Disc Brake Caliper

N04C-MF Disc Brake Pads - Metal/Composite

SLX BL-M7100 Brake Lever Blade

N03A-RF Disc Brake Pads - Resin/Aluminum

Original Tire Sealant

Minion DHR II Tire

XX1 Eagle XG-1299 Cassette

Red Label Race Brake Pads - Shimano/TRP 4-Piston

D02S-MX Disc Brake Pads - Metal/Steel

Outbound Lighting

X01 Eagle Chain

BH90-SBLS Brake Lever Hose Cover

TL-FC41 Direct Mount Chainring Lockring Tool