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Mondraker Sly Drops In New Lightweight Alloy All-Mountain eMTB with Bosch SX Motor

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, riding
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With an alloy frame, light but powerful Bosch CX ebike motor & a mid-sized battery, Mondraker created a rare aluminum all-mountain eMTB that’s stealthy, still pretty lightweight, playful, and a bit more affordable. Mondraker says it’s all about balance. This is still a relatively expensive ebike, but Mondraker wanted to build a more accessible entry point for riders looking to get into ebikes. So, with the lighter-assist SX motor and a 400Wh tucked inside a normal-looking alloy frame, the Sly should make a great stepping stone to pedal-assisted trail riding…

Mondraker Sly eMTB 150/160mm alloy all-mountain ebike

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike
(Photos/Mondraker)

So where is the logical entry point to performance eMTBs? Mondraker thinks their new Sly might be the answer.

Their carbon Crafty goes full-blast with a torque-y Bosch CX motor and huge batteries for big range. The carbon Neat with its ultralight TQ powertrain doubles down on less weight for a more natural ride. And now, the Mondraker Sly fills that gap in between. And at prices that put an eMTB a bit more in-reach of the average mountain biker.

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, climbing

It’s Mondraker’s 3rd light mid-power eMTB (after the carbon Neat & Dune). In fact, the Sly was apparently the result of Mondraker realizing the viability of the alloy development prototype they made to refine the Neat before opening carbon molds.

What’s new?

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, angled

This Mondraker Sly eMTB is essentially the same travel (150mm rear / 160mm forks), suspension design & kinematics (short-link 4-bar updated Zero Suspension), and progressive handling ride (Forward Geometry) as the Mondraker Neat. Just now, it gets built with a shapely aluminum frame, a slightly higher torque Bosch Performance SX motor, an 11% bigger battery, and a two thousand euro lower starting pricetag!

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, hike-a-bike

It also adds a 5th frame size option to give riders a more dialed-in fit – squeezing a M/L in between the S-XL run.

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, airborne in teh pines

“SLY… fleshes out what we can offer our potential customers as well as offering up new price points. Why alloy? Because it makes sense! It’s where everything started, it’s never gone out of fashion, and the demand is still there. In fact, after NEAT and DUNE, this has been a very special project for us. We’ve been very committed to making this a really, really nice bike, using cutting-edge manufacturing techniques and giving it a very refined finish which makes this one our lightest and finest Stealth Alloy full suspension e-MTB framesets ever.
This bike represents a deepening of our trust and confidence in the light e-MTB market. Moreover, the Bosch Performance SX motor shares the same philosophy as the SLY, ‘punchy’, ‘powerful’ and ‘light’; They could have been made for each other. The specifications were important too. We wanted them to be down-to-earth to give that ‘real’ feel on the trails and I think we nailed it.”

– Luis Martínez, Mondraker Product Manager

Tech details from Mondraker:

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, mondraker looks in alloy
  • Stealth Alloy frame with seamless welds to recreate classic ‘organically angular’ Mondraker design aesthetic
  • Updated Zero Suspension System with the same NEAT kinematics
  • 29” wheels with 150mm travel and a 160mm fork
  • classic Mondraker Forward Geometry
  • Bosch Performance SX 55Nm x 250W motor (600W peak), with 4 fully tunable assist modes
  • 400Wh integrated internal battery, with up to 1500m vertical gain range
  • compatible with 250Wh Powermore range extender, for an extra +60% range
  • Bosch eMTB controller set in the toptube, plus handlebar-mounted eBike display
  • HHG (Hidden Housing Guide) headtube integrated cable guiding
  • 2x sets of bottle bosses for 2 water bottles or 1 bottle + range extender
  • max 29 x 2.6” (66mm) rear tire clearance
  • integrated rear shock guard, plus plastic & rubber frame protectors
  • 200mm Post Mount rear disc brake mount,
  • BSA threaded bottom bracket
  • tapered 1.5″ headtube
  • Boost 148x12mm rear axle
  • integrated chain guide
  • UDH (Universal Derailleur Hanger)
  • 5 sizes (S-XL)
2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, zero suspension

2025 Mondraker Sly eMTB – Pricing, options & availability

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, bosch SX close-up

The new lightweight, mid-power aluminum Mondraker Sly eMTB is officially a model year 2025 ride, so you can order one from your local dealer now, but it might be a while until they actually have it available for you. The Sly comes in two ebike builds, both that share similar builds with Mondraker house-brand OnOff components, and similar <21kg (<46lb) complete eMTB weights.

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, R
2025 Mondraker Sly R

For $5600 / 6000€ you get the Sly R in Marlin blue with a RockShox Psylo Gold RC 160mm fork & 150mm of rear suspension travel from a Deluxe Select+ shock. The OEM-only SRAM S1000 AXS T-type derailleur handles shifts, and DB8 Stealth 4-piston brakes manage stopping of the 30mm internal Mavic E-CrossRide wheels.

2025 Mondraker Sly lightweight alloy eMTB, aluminum all-mountain ebike, RR
2025 Mondraker Sly RR

The more premium black $6600 / 7000€ Mondraker Sly RR upgrades to a Fox 36 fork & Float X Performance EVOL shock, plus a GX AXS Transmission, Code Bronze Stealth 4-piston brakes, and 30mm internal Mavic E-CrossTrail SL wheels.

Mondraker Sly light aluminum eMTB all-mountain ebike, riding

Mondraker.com

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