Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
Shimano XTR SM-CRM91 Chainring for XTR M9000 / 9020 30TThe Shimano XTR SM CRM91 Chainring features Hollow gear construction for optimized rigidity, lightweight and durability. Key Features: Dynamic Chain Engagement (DCE) is used to hold the chain and help prevent chain jump out. This is achieved by using a broader and taller tooth profile in conjunction with a special hooked leading edge and alternate profiled tooth shaping. This provides superior chain retention, lower driving sound, increased durability
The Shimano XTR SM-CRM91 Chainring features Hollow gear construction for optimized rigidity, lightweight and durability.
Key Features:
- Dynamic Chain Engagement (DCE) is used to hold the chain and help prevent chain jump out. This is achieved by using a broader and taller tooth profile in conjunction with a special hooked leading edge and alternate profiled tooth shaping. This provides superior chain retention, lower driving sound, increased durability and drag to a minimum
- Hollow gear construction for optimized rigidity, lightweight and durability
- Durable teeth using a Stainless steel construction supported by a carbon and alloy carrier body on 36T/34T, alloy carrier body on 32T/30T
- Dyna-Sys11 HG-X11 11-speed chain compatible
- Available in 30T/32T/34T/36T
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
4.4 ★★★★★
Based on 318 reviews
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Product Reviews
★★★★★ 1
Toxic ingredients
Size: 2 Fl Oz (Pack of 1)
There are endocrine disruptors in here that are harmful to your health. I nearly got to the point of being disabled from endocrine issues. Has ingredients that ruin fertility, raise risk of cancer, and ruin your endocrine system. I hope these brands can take these ingredients out and begin to care about consumers health.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Returning customer! :-)
Size: 2 Fl Oz (Pack of 1)
I love this product. The size is perfect, it smells amazing, and my skin has no reaction to it whatsoever (aside from what it’s supposed to do). So just a little background, my mother is Caucasian- my father is African American. I can either get a sun burn or get super tan- all depends on what products I use while under the sun.
In the past, low quality products have given me a sunburn over a period of long sun exposure. Contrary to that, high quality products require me to apply less and will prevent me from sunburns. I do have to reapply, depending how much sun exposure I am getting.
I originally purchased this product for a week long trip to Mexico with my boyfriend. I only bought 2 bottles- and we spent A LOT of time on the beach/ getting sun. We both used the sunscreen and STILL HAD LEFTOVERS after our trip (half a bottle still full). In addition, neither of us got sunburns- he got a nice sun kissed glow and I got a tan!
It is TSA carry-on approved, very lightweight, and easy to use. I would recommend this product to anyone who asks! 10/10 will repurchase again :-)
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Reviewed in the United States on May 20, 2024
★★★★★ 5
Works & smells great!
Size: 6 Fl Oz (Pack of 1)
Works & smells great!
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Great smell
Size: 2 Fl Oz (Pack of 1)
Smells amazing, and goes on clear
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Reviewed in the United States on June 1, 2026
★★★★★ 5
“Holy Sun Protection, Batman! This Stuff Works!” 🦇🦸♂️
Size: 6 Fl Oz (Pack of 1)
The COOLA Organic Sunscreen SPF 50 Sunblock is the real deal. It goes on smooth, absorbs quickly, and doesn’t leave behind that greasy, chalky layer most sunscreens do. I put it to the test during a full day outdoors, and it held strong—no burns, no irritation, just solid protection.
What makes it even better is the formula: not overloaded with harsh chemicals, but still highly effective. It feels more like skincare than sunscreen, which makes reapplying far less of a chore.
If Batman and Robin swapped their capes for beach towels, this would be the sunblock in their utility belts—powerful protection, clean ingredients, and a formula that actually works when the heat is on. 🦇☀️
Would you like me to also create short funny one-liner summaries for each review (like quick taglines), so you have both the full review and a quick punchy line to use?
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Reviewed in the United States on August 19, 2025
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