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- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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Description
gears shimano Deore XT M8100 1 x 12 Groupset – Thunder Mountain BikesThe Shimano Deore XT Groupset is the original trusted mountain bike groupset, beloved by mountain bikers worldwide. No matter the trail or ride, XT delivers reliable shifting, superior braking, and easy maintenance. Engineered for high performance, this groupset is a dependable workhorse for all your mountain biking needs. This kit now includes the new Deore XT M8200 cassette. Shimano Deore XT Groupset Includes: Shimano Deore XT M8100 Series Crank
The Shimano Deore XT Groupset is the original trusted mountain bike groupset, beloved by mountain bikers worldwide. No matter the trail or ride, XT delivers reliable shifting, superior braking, and easy maintenance. Engineered for high performance, this groupset is a dependable workhorse for all your mountain biking needs. This kit now includes the new Deore XT M8200 cassette.
Shimano Deore XT Groupset Includes:
Shimano Deore XT M8100 Series Crank Arms
| Model: | Hub Spacing: | Chainline: | Q-factor: | Weight: |
| FC-M8100 | 135/142mm or 141/148mm (Boost) | 52mm | 172mm | 620 grams |
| FC-M8120 | 141/148mm (Boost) | 55mm | 178mm | 628 grams |
| FC-M8130 | 157mm (Superboost) | 56.5mm | 181mm | 636 grams |
Shimano Deore XT SM-CRM85 Chainring
- Available sizes: 28t, 30t, 32t, 34t, 36t
Shimano CS-M8200-12 Cassette
- Cogs: 10-51t: 10-12-14-16-18-21-24-28-33-39-45-51
- Freehub Interface: Microspline
- Average Weight: 10-51t: 458 grams
Shimano SL-M8100-IR Shift Lever
- Mount: I-SPEC EV
- Max Multiple Shifts: 4
- Shifter Type: Rapidfire Plus
- Average Weight: 120 grams
Shimano RD-M8100 Rear Derailleur
- Cage Length: SGS/Long
- Max Low Sprocket: 51t
- Min Low Sprocket: 45t
- Pulley Size: 13t
- Average Weight: 284 grams
Shimano CN-M8100 Chain
- # of Links: 138
- Roller Link Plate: Sil-Tec
- Quick Link included
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 2097 reviews
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Product Reviews
★★★★★ 5
NICE AND STRETCHY
Color: Navy Blue, Size: 42
These pants are made of a material that seems durable and is definitely comfortable, and they have a stretch band at the waist that can comfortably accommodate many different belly girths-- from slim to portly. The waist also has a drawstring. I'd call these light weight pants, as the material is thin. They aren't baggy at all and fit the natural contours of an average male physique.
The pants have two fairly deep front pockets and one small rear pocket that can easily fit a regular-sized wallet. But, I would not recommend carrying a wallet in the rear pocket, as, due to the depth of the pocket being only as deep as the wallet is long, it might slip out as you move around, sitting and rising.
If nature calls, and you need to pee, you will have to pull your pants down and excite anyone in the immediate vicinity, as there is no opening, either buttoned or zippered, in the front of the pants. So, in that respect they are kind of like sweatpants. I'd call these pants good for inside the house or wearing on the street.
I like them despite the lack of a fly, so I give 5 stars. I see lots of Chinese, Korean, and Japanese guys around who like to wear this type of pant, but these fit nicely for generally larger and more robust Caucasians type physiques as well. You don't have to worry about a belt or a broken fly zipper with these.
Of course they are made in China, but due to their vast experience selling clothing to Americans, the manufacturers are well acquainted with big masculine American bodies and their needs.
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Reviewed in the United States on January 9, 2026
★★★★★ 5
Good product.
Color: Black, Size: 38
Good price and fits good. Would buy again
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Reviewed in the United States on June 4, 2026
★★★★★ 4
Good fit
Color: Black, Size: 36
Comfortable and looks grey
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Reviewed in the United States on February 15, 2026
★★★★★ 5
Perfect pants!
Color: Dark Gray, Size: 36
Absolutely wonderful pants that are so comfortable. I can travel in them or wear them as daily casual slacks for any event. I finally found pants that I enjoy that look great and are easy to care for. I’m gonna order more colors.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Great house pants
Color: Black, Size: 42
these pants are very comfortable and fit well. Perfect for the summer in the desert
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Reviewed in the United States on April 11, 2026