New Shimano XTR Di2: Finally Wireless!
Remember when Shimano delighted purists with its impeccably tuned mechanical groupsets, yet left tech enthusiasts yearning as SRAM surged ahead with wireless drivetrains? Well, after seven long years of anticipation, patent navigation, and rigorous testing, the new Shimano XTR Di2 wireless system has finally arrived. And it's safe to say—it was well worth the wait.
A Wireless Revolution Without Compromise
The standout feature of the Shimano XTR M9200 is, of course, its transition to a fully wireless setup. Gone are the cumbersome cables: the drivetrain now communicates via a proprietary wireless protocol, powered by a discreet battery housed directly within the rear derailleur. This compact battery offers an impressive range of approximately 340 km per charge—surpassing current competitors—and recharges swiftly in just one hour via USB-C.
But Shimano didn't just cut the cords for aesthetics; the Japanese brand has thoroughly reengineered the derailleur's robustness to withstand the most extreme conditions.
A Derailleur Built to Withstand Impacts
Shimano understands that on the trails, electronic derailleurs often face unexpected encounters with rocks. The new XTR features a streamlined profile known as Shadow ES, designed to deflect impacts rather than absorb them directly. In the event of a collision, a system called Automatic Impact Recovery automatically repositions the derailleur to the correct gear, eliminating stressful mid-trail adjustments.
The dual-spring stabilizer effectively replaces the previous clutch mechanism, removing the need for adjustments and providing 72% more chain tension. The result? Enhanced chain retention, reduced noise, and precise shifting under all conditions.
A Highly Customizable Transmission
Shimano doesn't do things halfway when it comes to customization. The new XTR Di2 group offers two distinct cassettes to suit various rider profiles:
- 10-51 teeth, ideal for long rides or demanding enduro trails.
- 9-45 teeth, a new ultra-compact, lightweight option (-70 g), perfect for XC races or those seeking increased ground clearance (+23 mm).
For fans of backward compatibility, there's great news: your existing 12-speed Hyperglide+ cassettes, chains, and chainrings remain fully compatible—a considerate gesture for well-equipped enthusiasts.
A Featherweight Yet Ultra-Durable Crankset
Shimano retains its renowned Hollowtech II construction with forged aluminum, offering two distinct crankset versions: XC (lighter, narrow Q-factor of 168 mm) and Trail/Enduro (more robust, wide Q-factor of 176 mm). Available in four lengths (160 to 175 mm) and accommodating chainrings from 28 to 36 teeth, this crankset delivers unmatched strength, lightness, and versatility. The only drawback? No integrated power meter—for now.
Consistent Braking, Ride After Ride
Shimano now uses a low-viscosity mineral oil combined with newly designed seals to ensure optimal thermal stability. Riders can choose between two brake versions:
- XC: lightweight calipers with two pistons.
- Trail/Enduro: fully redesigned four-piston calipers, ergonomic levers, and an optimized reservoir for powerful, consistent braking in all conditions.
A Shifter You'll Love to Use
Shimano achieves a remarkable feat with the new wireless shifter: the traditional feel of a mechanical lever combined with exceptional ergonomics. The paddles are fully adjustable across four axes and offer an optional double-click feature: press gently to shift one gear, push further for two gears at once, or hold down for rapid gear changes. Add a third configurable button for your GPS or lighting, and you have one of the most user-friendly shifters ever designed.
Carbon Wheels: Lightweight Yet Robust
Shimano didn't stop at drivetrains and brakes: two new carbon wheelsets are introduced—an ultra-light XC version with titanium spokes (weighing under 1200 g per pair) and a robust Enduro version (1791 g), offering stiffness, lightness, and responsiveness without compromising durability.
So, What’s the Price Tag?
Of course, we’re talking about premium XTR components here. The Shimano XTR M9250 kit—which includes the derailleur, shifter, battery, and charger—is available in multiple configurations (short or long cage, I-Spec or standard) and retails for $1,329.99 CAD.
Verdict : Shimano Hits the Mark!
With the wireless XTR Di2, Shimano makes a triumphant return to the forefront. Reliability, durability, top-tier performance, and backward compatibility: this group has everything to win over passionate riders and demanding competitors. Shimano may have taken its time, but it was clearly to deliver a drivetrain that lives up to all expectations.
Let's be honest—this time, the competition has serious reasons to be concerned.
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