First Look | 2025 Trek Slash+ is a brand new lightweight e-MTB with high pivot suspension

The Trek Slash+ is a brand new lightweight electric mountain bike for 2025. It follows in the footsteps of the popular Fuel EXe that was launched two years ago, though it pumps up the travel to create a much burlier package that’s designed to thrive on steeper and more technical trails. It shares a lot in common with the regular Slash that we reviewed earlier this year including a mixed wheel setup and the distinctive high pivot suspension design, making this the longest travel e-MTB that Trek has ever produced.

An overview of the 2025 Trek Slash+

Equipped with 170mm of travel at both ends, the Trek Slash+ is a lightweight e-Enduro bike that’s built to go head-to-head with the likes of the Specialized Kenevo SL.

Like its non-motorised counterpart, the Slash+ features a high-pivot variation of Trek’s four-bar ABP suspension platform. The chain routes up and over a big 19T pulley, and there’s a redesigned lower guide that incorporates beefed-up chainring protection. There’s also a new fully-enclosed lower pulley that aims to eliminate the chance of the chain derailing.

Leverage rate adjustment is built into the lower shock mount, which comes from the factory in the less progressive setting. Flipping this around into the more progressive setting is recommended should you wish to run a coil shock.

As with many other lightweight e-MTBs on the market, the Slash+ is only produced in carbon fibre. Well, at least for now anyway. It features a mullet setup with a 29in front wheel and 27.5in rear wheel, with the exception being the Small size that uses 27.5in wheels front and rear.

Compact motor, big battery

Powering the new Slash+ is the compact TQ HPR50 motor. Despite being the lightest and quietest drive unit we’ve tested, the HPR50 still pumps out up to 50Nm of peak torque and 300W of peak power.

Unlike the Fuel EXe with its small 360Wh battery, the Slash+ gets a brand new 580Wh battery from TQ. This offers a significant boost in capacity, though it’s still possible to add on TQ’s 160Wh range extender for those who want maximum ride time.

Trek secures the main battery inside the downtube with two large bolts. Removing these and the motor skid plate allows you to take the battery out of the frame should you need to charge it separately. Otherwise you can charge the battery in situ using the port on the frame.

As for the user interface, the Slash+ features exactly the same controller and top tube display as the Fuel EXe. You can configure the display using the Trek Central or TQ app, which also allows you to tune the motor’s output. Check out our TQ HPR50 review for more info.

Trek Slash+ geometry & sizing

Geometry on the Trek Slash+ closely follows that of the non-motorised Slash. The main point of difference is the omission of the M/L size, which means the Slash+ is only available in four frame sizes rather than five.

Otherwise you’ll find the same 63.5° head angle and 77° effective seat tube angle. Trek also utilises size-specific rear centre lengths that varies from 434mm on the Small up to 445mm on the X-Large.

Like the regular Slash and Fuel EX, the Slash+ incorporates adjustable headset cups. The bike comes from the factory with the neutral cups fitted, though purchasing the offset cups aftermarket will allow you to steepen or slacken the head angle by a degree.

Trek Slash+ price & specs

There will be two Trek Slash+ models coming into Australia this year. Both will share an identical OCLV carbon frame, TQ HPR50 motor and 580Wh battery.

Prices will start at $11,499 AUD for the Slash+ 9.7, which gets a Fox 38 Rhythm fork and a Float X shock, Shimano SLX/XT gearing and 4-piston brakes. It also features lightweight Bontrager XR5 Team Issue tyres, which seem like an odd choice for such a big travel e-MTB.

You’ll find more appropriate SE6/SE5 tyres on the top-end Slash+ 9.9 model, which also upgrades to a RockShox Zeb Ultimate fork and Vivid Ultimate shock. Along with the wireless Reverb AXS dropper, SRAM X0 Transmission and Maven brakes, that bike will set you back a cool $17,999 AUD.

We’ve put our name down to review the new Slash+ and can’t wait to see what it’s all about. In the meantime, read on for the detailed specs for each model below.

2025 Trek Slash+ 9.9

• Frame | OCLV Carbon Fibre, ABP High Pivot Suspension Design, 170mm Travel
• Fork | RockShox Zeb Ultimate, Charger 3.1 RC2 Damper, 170mm Travel
• Shock | RockShox Vivid Ultimate, 230x65mm
• Motor | TQ HPR50, 50Nm Peak Torque
• Battery | TQ 580Wh
• Wheels | Bontrager Line Pro 30, Carbon Rims, 30mm Inner Width
• Tyres | Bontrager SE6 Team Issue 29×2.5in Front & SE5 Team Issue 27.5×2.5in Rear
• Drivetrain | SRAM X0 Eagle AXS Transmission 1×12 w/X0 Alloy Crankset & 10-52T Cassette
• Brakes | SRAM Maven Silver 4-Piston
• Bar | Bontrager Line Pro, OCLV Carbon, 27.5mm Rise, 780mm Width
• Stem | Bontrager Line Pro, 35mm Length
• Seatpost | RockShox Reverb AXS, 34.9mm Diameter, 170mm Travel
• Saddle | Bontrager Verse Short Comp, Steel Rails
• Claimed Weight | 20.88kg
• RRP | $17,999 AUD

2025 Trek Slash+ 9.7

• Frame | OCLV Carbon Fibre, ABP High Pivot Suspension Design, 170mm Travel
• Fork | Fox 38 Rhythm, GRIP Damper, 170mm Travel
• Shock | Fox Float X, Performance Series, 230x65mm
• Motor | TQ HPR50, 50Nm Peak Torque
• Battery | TQ 580Wh
• Wheels | Bontrager Line Comp 30, Alloy Rims, 30mm Inner Width
• Tyres | Bontrager XR5 Team issue 29×2.5in Front & 27.5×2.5in Rear
• Drivetrain | Shimano SLX/XT 1×12 w/e*13 Plus Alloy Crankset & 10-51T Cassette
• Brakes | Shimano Deore 4-Piston
• Bar | Bontrager Line, Alloy, 27.5mm Rise, 780mm Width
• Stem | Bontrager Elite, 35mm Length
• Seatpost | Bontrager Line, 34.9mm Diameter, 170mm Travel
• Saddle | Bontrager Verse P3, Chromoly Rails
• Claimed Weight | 20.38kg
• RRP | $11,499 AUD