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Tired managing batteries, firmware updates, and paying for expensive electronic drivetrains? This episode with SRAM's Jimmy Nordloh goes deep into the new Eagle 90 and Eagle 70 mechanical transmission systems that deliver trasmission's shifting performance without electronic complexity. The new mechanical transmission uses the same cassettes and flattop chains as the wireless transmission systems but use a traditional cable. At ~$670 and ~$490 respectively, these systems are for riders who want Transmission performance without the heavy price tags, apps, or batteries.

SRAM has also standardized on mineral oil across their entire brake range (including the new Motiv brakes), eliminating DOT's moisture absorption problems while providing better lubrication and system longevity. Additionally, a completely redesigned Reverb AXS B1 dropper post increases reliability and reduces cost by switching to a simple air-over-air system that's easier to service and more reliable long-term. With 250mm travel options and improved tire clearance, this dropper solves fitment problems on small frames and includes a "Ride Active" feature which SRAM says… “provides beneficial suspension characteristics during technical riding without compromising pedaling efficiency or proper bike fit”. Do you agree?

Links:

Eagle 90 Transmission Drivetrain: https://www.sram.com/en/sram/mountain/series/eagle-90-transmission

Eagle 70 Transmission Drivetrain: https://www.sram.com/en/sram/mountain/series/eagle-70-transmission

Reverb B1 Dropper: https://www.sram.com/en/rockshox/models/sp-rvb-axs-b1

Motiv Brakes: https://www.sram.com/en/sram/mountain/collections/brakes/brake-collections/heavy-duty-brakes?filters=&sort=Relevancy&page=1

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In this comprehensive bike maintenance episode, suspension expert Dane "Suspension Guru" Higgins tackles the most common disc brake problems plaguing mountain bikers. Learn why your hydraulic disc brakes keep squealing despite new rotors and pads, how brake pad contamination occurs, and the proper bedding process for noise-free performance. Dane explains caliper alignment techniques, the debate between OEM vs aftermarket brake pads, and why sanding contaminated pads often fails to solve squealing issues.

The episode also covers essential suspension service knowledge including the difference between lower and full fork services, typical service intervals (50-100 hours), and why proper damper maintenance prevents costly blowouts. Plus, discover e-bike motor care secrets like optimal cadence settings to prevent overheating, dropper post storage tips to avoid expensive repairs, and professional cable routing solutions for internal systems. Whether you're dealing with squeaky brakes or planning suspension maintenance, this episode delivers actionable bike shop wisdom.

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In this comprehensive deep dive, Shimano's Mountain Bike Product Manager Nick Murdick reveals a copious amount of details about their new XTR M9200 Di2 wireless groupset. Learn how Shimano engineered their first fully wireless mountain bike drivetrain with on-board derailleur batteries, customizable shifter paddles, and rock-impact protection designed from "the rock's perspective." Murdick explains the technical innovations behind the wedge-shaped derailleur design, dual-click shifting mechanism, and why Shimano chose derailleur hangers over direct-mount systems for maximum trail durability.

Discover the complete XTR M9200 component lineup including new brake technology with updated hydraulic fluid, 160mm crank arm options, and both long-cage (10-51) and short-cage (9-45) cassette configurations. Nick shares insider development stories, addresses SRAM transmission comparisons, and explains backward compatibility with existing Shimano components. This episode covers everything from battery life expectations to trim mode functionality, making it essential listening for mountain bikers considering wireless drivetrain upgrades or mechanics working with the latest Shimano technology.

Video: https://youtu.be/Ilx6ilqq6TQ

Web: https://bike.shimano.com/stories/article/shimano-xtr-m9200-di2-mountain-bike-components.html

Update! Nick Murdick got back to us after the recording with the answer to a question he wasn’t sure of at the time.

Here’s the answer…

It is indeed possible to convert a derailleur between short cage and long cage at the shop. If you connect to e-tube project through the PC you will see an option to change between GS and SGS. The derailleur uses a different shift pattern for each cassette. In some gears you may notice that it breaks the shift into two steps in order to use the shift ramps on the cassette more effectively. It's more noticeable when double shifting.

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