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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
4.2 ★★★★★
Based on 44 reviews
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Product Reviews
★★★★★ 3
Book arrived with glue? Residue on the cover
Format: Paperback, Format: Paperback
Book arrived damaged. I ordered a new copy so it should have had no damage. The book is required for class so I don’t have the time to return it but you’d be better off buying it used from someone else and save some money.
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Reviewed in the United States on February 4, 2022
★★★★★ 5
Interesting and easy to understand
Format: Paperback
"As a visual learner, I have been looking for ways to help me better memorize pharmacology knowledge. Top 200 Drugs Made Easy is a perfect match for me! It is not only a pharmacology coloring book, but also an interactive learning experience. Through coloring and drawing, I can associate drug information with visual images, which has a significant memory effect. This entertaining way of learning makes me feel relaxed and happy during the learning process, and I no longer resist memorizing boring knowledge points."
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Reviewed in the United States on May 21, 2025
★★★★★ 5
NP Student Approved!
Format: Paperback
I’m in NP school and this book has been so helpful!! Not only does it have just the right information, but it’s fun to color! It’s a great supplement to my textbook and lectures.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025
★★★★★ 5
Great for supplemental learning
Format: Paperback
This study guide is an interesting take on drug memorization, though the execution could be better. The coloring concept helps with memory retention, especially for visual learners trying to connect drug names with their uses and classifications. The organization by drug class is logical and helps build understanding of how related medications work.
The basic pharmacology information is accurate and the quick-reference format is handy for review. The "made easy" title fits - it breaks down complex medication information into manageable chunks. The coloring activities do help make dry content more engaging, though the quality of the illustrations varies.
Some drawbacks: the coloring spaces are sometimes too small for comfortable use, and the paper quality could be better - markers tend to bleed through. Several important newer drugs are missing, and some of the clinical information feels oversimplified. The binding isn't very durable - pages can come loose with regular use.
For students, this works best as a supplementary study tool rather than a primary resource. It's helpful for initial learning and quick review before exams, but you'll need more detailed sources for complete medication information. Consider using colored pencils instead of markers, and maybe reinforce the binding before heavy use.
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Reviewed in the United States on January 21, 2025
★★★★★ 5
Love
Format: Paperback
Great design, not boring, fun and educational! Perfect to help me memorize and learn in a fun, creative way. So many pages, I am pleased!
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Reviewed in the United States on August 14, 2025
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