Holiday Deals Up to 80% Off! Unwrap the Savings

Shimano XT FC-M8120 1x Crank Arms

backcountry  |  SKU: DWGBSLL
$7853 49% Off

Original price

$15399

Condition
Good  NEW
Never used. Shows no signs of wear. New items may have the original tags or come in their original packaging.

EXCELLENT
This gear should be like new with very minimal use and wear.

GOOD
This gear is still in good shape. There’s some wear and tear, but has plenty of life left in it. Signs of wear may include pilling, snags, lint, animal hair, dried dirt, and minor but noticeable staining, etc.

FAIR
This gear is still usable and is in OK shape, but shows noticeable signs of wear and tear. Fair condition products likely have cosmetic blemishes throughout such as pilling, lint, animal hair, and dried dirt. Physical damages such as holes, tears, loose stitching, and staining are often found on Fair items. Fair items are valued for function over form.

FAQ's

Are the product photos of the actual items?

  • Yes! Geartrade does not use stock photos on their used gear. What you see, is what you get.
  • Some items in new condition may have stock photos.

Why should I buy used gear?

  • Good gear is built to last, you can save a lot of money and it's great for the planet.

I want to sell gear - what do you accept?

What is your return policy?

  • We offer a generous no-questions-asked 14 day return policy. You have up to 14 days to return your gear after it has been delivered. The item needs to be in the same condition we sent it to you (keep those tags on). Our full return policy can be found here: policy

How fast do you ship?

  • Most orders placed before 1pm MST are shipped out that day. We ship Monday-Friday.
Why Geartrade?
  • Items are Hand-inspected by Gear Experts
  • Steep Discounts on Premium Outdoor Brands
  • Over 3 million pounds of gear diverted from landfills since 1999

Product Condition: The XT FC-M8120 1x Crank Arms is in Good condition. Was previously owned for approximately 2 weeks. Crankset has been installed. Shows little to no other signs of use. Sold as-is. All warranties void.

Size: Unisex 170mm

Color: Black

Retail Cost: $153.99

With single-ring drivetrains effectively taking over the mountain bike world, the quest for more gears quickly led us to 12-speed. Shimano entered the 12-speed realm a little late, but in typical Shimano fashion they took their time to get it right. It started with the race-ready XTR group, but for those of us who don't quite have the funds to reach for XTR, Shimano has trickled that technology down to the XT level. The XT FC-M8120 1x Crank Arms use the familiar hollowcore construction from past years, but now incorporate a user-friendly direct-mount chainring interface, along with a special tooth profile that greatly improves chain retention on these new 12-speed drivetrains.

These M8120 crank arms feature a 55mm chain line and a wider 178mm Q-factor, as opposed to the 52mm chain line and narrower 172mm Q-factor found on the M8100 crank arms. This makes them an ideal choice for burlier all-mountain and enduro bikes that require a bit of extra chainstay clearance. The M8120 cranks are optimized for bikes with 12 x 148mm Boost hub spacing, though both the M8100 and M8120 cranks work with Boost bikes.

The crank arms are constructed using Shimano's proprietary Hollowtech II technology, balancing stiffness, strength, and weight for superior power transfer. Hollowtech uses cold-forging to create a light and hollow crank arm that doesn't compromise on strength or stiffness, enabling you to charge hard into rowdy trail sections without worries of your crankset flexing under pressure or getting damaged by rock strikes. Meanwhile the low weight keeps you from getting bogged down with extra grams when you're pushing for big mile days.

Regardless of your preferred riding style and terrain, you'll appreciate the new direct-mount chainring application. The drive-side arm removes for ring placement, making chainring swaps easy to execute while your crank is still on your bike. This means you can toss on a lofty 34 or 36-tooth ring for smooth rolling singletrack, or give yourself a break with a 28-tooth when climbing is the day's main goal.


XT FC-M8120 1x Crank Arms (DWGBSLL)

TECH SPECS

  • Arm Material: cold-forged aluminum
  • Arm Length: 165mm, 170mm, 175mm
  • Rings: direct mount (not included)
  • BB Type: [recommended Pressfit BB] Shimano BB-MT800-PA, [recommended threaded BB] Shimano BB-MT800
  • Spindle: 24mm
  • Q Factor: 178mm
  • Chainline: 55mm
  • Compatible Components: Shimano CN-M8100 chain, Shimano XT 12-speed drivetrains
  • Recommended Use: mountain biking

Not everything needs to be new. Earth matters too.

Wear it Out ™

Your Security Matters

Payment Methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Back to top