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4.5 (123)

Deore XT Crank Arms

Name: Thunder Mountain Bikes Deore XT Crank Arms - Deore XT Crank Arms
Brand: Thunder Mountain Bikes
SKU: 42370054783211
Price: 185.0 USD
Availability: InStock
Rating: 5 (21 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$185.00

Quantity

Color

Black

Quantity

Details:

Series: Deore XT M8100
Speeds: 12-speed
Material: Aluminum
P.C.D: Direct
Bottom bracket not included
Chainring not included

Shimano Deore XT FC-M8100 Crank Arms

Hub Spacing: Non-Boost (135/142mm) & Boost (141/148mm)
Chainl...

Reviews

5.0

24 ratings

Great lightweight cranks.

Bought these to replace the heavy M511 cranks so I could run a power meter. It was great that Thunder Mountain had these at a great price and I was able to get 170mm cranks

D.Melton · October 20, 2025

XT cranks

Best value in cranks as far as I’m concerned. Great rigidity and quality.

Chris · October 2, 2025

Going Short

I've read about using shorter crank arms and decided I'd try it. These are the same Shimano crank arms that were on my bike, so I already knew their quality. I went from 170mm to 165mm on a steel suspensionless mountain bike. Like the greater clearance and so far the pedal motion feels great. Very easy transition to make.

Mark · February 20, 2025

Delivery & Returns

Returns accepted within 60 days

Thunder Mountain Bikes

4.9 (3.2K)

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Details:

Series: Deore XT M8100
Speeds: 12-speed
Material: Aluminum
P.C.D: Direct
Bottom bracket not included
Chainring not included

Shimano Deore XT FC-M8100 Crank Arms

Hub Spacing: Non-Boost (135/142mm) & Boost (141/148mm)
Chainl...

Reviews

5.0

24 ratings

Great lightweight cranks.

Bought these to replace the heavy M511 cranks so I could run a power meter. It was great that Thunder Mountain had these at a great price and I was able to get 170mm cranks

D.Melton · October 20, 2025

XT cranks

Best value in cranks as far as I’m concerned. Great rigidity and quality.

Chris · October 2, 2025

Going Short

Mark · February 20, 2025

Delivery & Returns

Returns accepted within 60 days

Thunder Mountain Bikes

4.9 (3.2K)

T

Deore XT Crank Arms

Reviews

Delivery & Returns

Thunder Mountain Bikes

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