In the rapidly evolving world of trail and enduro mountain bikes, the Trek Slash 9 GX AXS T-Type Gen 6 stands out as one of the most aggressive and versatile rigs. Designed to blur the lines between a race-ready enduro machine and a backcountry weapon, the Gen 6 version of the Slash has undergone a major transformation—introducing a high-pivot suspension, UHD carbon frame, and wireless SRAM GX AXS T-Type drivetrain.
This bike doesn’t just climb better and descend faster it redefines what’s possible in big-mountain terrain. In this review, we’ll dive deep into the features, performance, strengths, and whether the Slash Gen 6 is the right bike for your next adventure.
What is the Trek Slash 9 GX AXS T-Type Gen 6 ?
The Trek Slash 9 GX AXS T-Type Gen 6 is a carbon enduro mountain bike equipped with 170mm front and 160mm rear travel, a high-pivot suspension layout, and 29” or mixed mullet wheel compatibility. Built around the needs of aggressive riders who demand both efficiency and descending capability, this bike sits confidently in the category of all-mountain and enduro monsters.
Trek Slash 9 GX AXS T-Type Gen 6 Review
Key Upgrades in Trek Slash 9 GX AXS T-Type Gen 6
- High-pivot rear suspension with an idler for smoother, more active rear travel.
- The slackened head tube and steeper seat tube for optimized climbing and descending.
- SRAM GX Transmission (T-Type) AXS for bulletproof, wireless shifting.
- Storage compartment (in-frame) and UHD Carbon Frame for added utility and strength.
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Frame and Geometry: Built to Bomb and Climb
At the heart of the Gen 6 Slash is Trek’s UHD OCLV Mountain Carbon frame, a super-durable, ultra-stiff chassis designed to take brutal hits and still pedal efficiently. The geometry has been completely reworked for Gen 6 with a longer reach, a slacker 63.5° head angle, and a steeper 77° seat tube angle for better pedaling position.
A major highlight is the adjustable chainstay length (440-450mm), allowing you to fine-tune handling based on wheel size or terrain. The bike also supports mullet or full 29-inch setups, giving you options to customize your ride feel.
What’s new:
- High pivot design + idler pulley for rearward axle path
- Better small bump compliance and cornering traction
- Storage in the downtube for tools or snacks
Suspension: Plush, Predictable, and Progressive
The Gen 6 Slash features a RockShox ZEB Select+ 170mm fork and a Super Deluxe Select+ rear shock, both tuned to work in conjunction with the high-pivot layout. This combination delivers excellent small-bump sensitivity, huge bottom-out resistance, and composure on big hits.
The rearward axle path increases traction and control on technical climbs and rock gardens. Despite its long travel, it doesn’t feel wallowy thanks to the progressive kinematics and idler pulley, which maintain pedaling efficiency.
Rider feel:
- Tracks incredibly well through rough terrain
- Minimal pedal kickback under power
- Absorbs square-edge hits like a champ
Drivetrain: SRAM GX AXS T-Type Transmission
This model features SRAM’s latest GX AXS T-Type wireless groupset, built on the new UDH (Universal Derailleur Hanger) platform. Unlike earlier AXS drivetrains, the T-Type is specifically designed to be more robust and modular, with direct-mount derailleur and tool-free adjustments.
The electronic shifting is smooth, instant, and smart. It’s almost impossible to miss-shift, and the system can handle full-power gear changes even under torque—ideal for steep enduro transitions or sprinting between trail features.
Also read the blog: Shimano XTR Di2 Review: Electronic Precision for Elite Trail Riders
Key Drivetrain benefits:
- Shift under load without skipping
- Easy setup and minimal maintenance
- Durable and designed for hard riding
Wheels, Tires, and Brakes
The Slash 9 GX AXS T-Type rolls on Bontrager Line Comp 30 wheels with a wide internal width, perfect for aggressive 2.5” tires. The stock setup includes Bontrager SE5 Team Issue tires, offering serious cornering grip and puncture protection.
SRAM Code Bronze 4-piston brakes provide powerful stopping power with solid modulation—crucial for long descents and technical terrain. The 200mm front and rear rotors ensure you stay in control, even on wet or loose trails.
Climbing Performance
Despite its aggressive build, the Gen 6 Slash climbs better than you’d expect for a 170/160mm bike. With a more upright seat angle, riders enjoy a more powerful pedaling position, and the idler keeps pedal kickback and chain tension under control. It’s not an XC bike, but it feels surprisingly planted and capable on techy, punchy climbs.
Climbing Summary:
- Efficient for an enduro bike
- Good seated traction
- The rear suspension doesn’t sag excessively under power
Descending Performance
This is where the Trek Slash 9 GX AXS truly shines. The high-pivot suspension tracks rough trails with confidence, and the frame feels incredibly stable at speed. Whether you’re hitting bike park lines, rocky chutes, or flow trails, the Slash feels composed, poppy, and incredibly fun.
Descending Summary:
- Incredibly stable on fast descents
- Rearward axle path improves confidence
- Smooth and predictable suspension feel
Integrated Features
- Internal storage (downtube) for tools, snacks, or tubes
- Knock Block 2.0 to protect against handlebar over-rotation
- Integrated chain guide and bash guard for drivetrain protection
- Adjustable geometry via Mino Link and chainstay flip chips
Who Is This Bike For?
The Trek Slash 9 GX AXS Gen 6 is ideal for:
- Enduro racers and aggressive trail riders
- Riders who tackle big mountain terrain
- Bike park and all-day adventure shredders
- Cyclists who want wireless shifting and a high-pivot setup
Conclusion
The Trek Slash 9 GX AXS T-Type Gen 6 is a bold, trail-devouring machine that sets a new standard for enduro bikes in 2025. With its high-pivot design, rock-solid carbon frame, modern geometry, and SRAM’s latest wireless drivetrain, it’s built to perform at the highest level whether you’re racing or just riding for the thrill.
If you’re after a bike that’s as capable of going uphill as it is bombing back down, the Slash Gen 6 should be at the top of your list. It’s a future-proof, high-performance platform for riders who demand the best.