Mondraker Sly R 2025 - Electric Mountain Bike





The Sly R e-bike combines Mondraker’s advanced lightweight Stealth aluminium frame with the compact Bosch SX motor for a responsive, smooth trail experience. With 150mm rear and 160mm front suspension, plus wireless SRAM AXS shifting, this bike delivers controlled power and top-tier handling on technical terrain. Perfect for those looking to push their limits with confidence.
Key Features
- 6061 Alloy Stealth Evo frame, hydroformed tubing, 150mm rear travel
- RockShox Psylo Gold RC fork with 160mm travel
- RockShox Deluxe Select+ rear shock with 150mm travel
- SRAM S1000 Eagle AXS T-Type 12-speed drivetrain
- SRAM DB8 Stealth 4-piston hydraulic disc brakes
- Mavic E-CrossRide 29” wheels with Maxxis Minion DHF/DHR II tyres
- Available with 0% APR finance
Drive Information
- Motor: Bosch Performance SX, 55Nm torque
- Battery: 400Wh integrated battery
- User Interface: Bosch display and handlebar-mounted mini remote
Built for both performance and comfort, the Sly R weighs in at under 21kg, making it one of the lightest in its category. The Stealth Alloy frame offers seamless welds for a clean, sturdy look, paired with Forward Geometry to provide excellent stability and precision handling. The Bosch Performance SX motor delivers smooth, powerful assist without adding unnecessary bulk, allowing you to power up climbs and maintain agility on technical descents.
With the SRAM AXS T-Type wireless drivetrain for smooth, reliable shifting and the powerful stopping power of 4-piston DB8 brakes, the Sly R is ready for any trail. The lightweight design enhances versatility and agility, making it ideal for riders seeking the thrill of e-MTB in a manageable, responsive package.
Occasionally, without notice, manufacturers change product design and/or specifications.
Frame | 6061 Alloy Stealth Evo, hydroformed tubing, Updated Zero Suspension System, 150mm travel, Forward Geometry, Boost 12x148mm rear axle, one-piece Monoblock upper link, HHG internal cable routing, oversize 15mm axles, integrated dropout speed sensor |
Fork | Rockshox Psylo Gold RC, 160mm, 3 Position, Debon Air, tapered steerer tube, Boost 15x110mm axle, 35mm steel stanchions, 44mm offset. Settings: compression adjustment at low-speed to lock, rebound, air preload |
Rear Shock | Rockshox Deluxe Select+, 185x55mm, Trunnion top mount, 30x8mm bottom bushings |
Headset | Acros custom IS52/ZS56, 1-1/8", 1.5" head tube, Internal cable routing, sealing plugs without blocklock |
Stem | Onoff S3 30mm 0º, 6061 forged alloy, 31.8mm barbore |
Bars | Onoff S3 1.0 6061 alloy, rise: 25mm, width: 800mm, 8º backsweep, 5º upsweep, 31.8mm barbore. L and XL size: 1.5 rise. |
Front Brake | Sram DB8 stealth, 4-piston caliper, Centerline 200mm IS 6 bolts one-piece rotor, steel-backed organic pads |
Rear Brake | Sram DB8 stealth, 4-piston caliper, Centerline 200mm IS 6 bolts one-piece rotor, steel-backed organic pads |
Brake Lever | Sram DB8, SwingLink and lever pivot bearings, tools-free reach and contact point adjust |
Rear Mech | Sram S1000 Eagle AXS T-Type, 12s |
Shifters | Sram Eagle AXS Pod MMX, 12s |
Speed | 12 |
Rims | Mavic E-CrossRide 29, 30mm internal width, welded, PFP, tubeless ready, 28 spokes |
Front Hub | Mavic, Boost 15x110mm, IS 6 bolts |
Rear Hub | Mavic, Boost 12x148mm, ID360 Ratched system, IS 6 bolts, HG freehub |
Spokes | Mavic J-bend double butted, contactless lacing |
Front Tyre | Maxxis Minion DHF 29x2.5 WT, tubeless ready, 3C MAXX GRIP compound, EXO+ protection, 60TPI, folding bead |
Rear Tyre | Maxxis Minion DHR II 29x2.5 WT, tubeless ready, 3C MAXX TERRA compound, EXO+ protection, 60TPI, folding bead |
Seat Post | Onoff Pija dropper internal, diameter 31.6mm, 1X Remote lever with bearing, S size: 140-115mm (388-235mm), M size: 160-135mm (428-255mm), ML size: 180-155mm (468-275mm), L size: 210-185mm (528-305mm), XL size: 210-185mm (528-305mm) |
Saddle | FIZIK Terra Aidon X5 145mm |
Chainset | E.13 Helix Core E*Spec Plus, All sizes: 160mm . Sram X-Sync 2 Eagle 34T, steel, narrow-wide, 104 BCD |
Chain | Sram GX Eagle T-Type, 12s, Powerlock |
Cassette | Sram XS-1270, 10-52T, T-Type, 12s |
Battery Size (WH) | Bosch Compact Powertube 400Wh |
Motor | Bosch Performance Line SX (25Km/h) GEN4 SMART SYSTEM Diagonal, Wide |
User Interface | Purion 400 / Bosch Mini Remote / Bosch System Controller |
Mondraker Sly Size Chart
Size |
Height (cm) |
Height (ft/in) |
S |
160 - 168 |
5'3" - 5'6" |
M |
165 - 178 |
5'5" - 5'10" |
ML |
172 - 185 |
5'8" - 6'1" |
L |
182 - 193 |
6'0" - 6'4" |
XL |
190 - 200 |
6'3" - 6'7" |
What size frame do I need if I am between sizes? - read here
Customer reviews and Q&A's are disabled because you declined functional cookies.
To enable reviews and Q&A's click the 'Cookie Settings' button below and enable functional cookies.
Mondraker Sly R 2025 - Electric Mountain Bike
Cycle to Work is a salary sacrifice scheme, where you can save up to 42% off a new Bike and Safety equipment. This means the cost is deducted from your salary as a non-cash benefit, so you save on tax and national insurance.
Here at Tredz, we accept Cycle to Work vouchers from all national schemes. For more information click here.
We understand that the Cycle to Work process can be a little slower than we would all like - so to help you pick the perfect ride, we're now offering FREE Cycle to Work Reservations (T&C's apply). Simply speak to a member of our Online Bike Experts Team via Live Chat to discuss your reservation. Find out more here.
At Tredz we make finance easy. You can choose from a range of flexible finance repayments from 6 months up to 48 months, choose to place a deposit and pay the balance on finance. Go with a 0% APR finance deal with absolutely no interest on payments, or a 9.9% APR Buy Now Pay later option with a choice of 12 or 24 deferred payment options, or a longer-term 14.9% APR option with lower monthly payments. For more information click here.
At Tredz, we’re committed to bringing you the best products at the best prices. If you find a product cheaper elsewhere, simply contact us for an immediate response using our live chat service. Click here to discuss your price match with an agent now for help.
Subject to Terms and Conditions
At Tredz, we offer a fast high quality service, with a range of options from free delivery on orders over £30, next day and convenient click & collect from one of our stores. Simply select within the checkout.
*Courier deliveries to Northern Ireland, Isle of Man, Isle of Wight, Channel Islands and the Scottish Highlands/Islands will incur a charge.At Tredz, if you are not 100% happy with your order, then you can use our simple hassle free returns service. Simply return the item new and unused in the manufacturers original packaging within 365 days of purchase. Bikes and larger items are collected by courier.
When you receive your bike, all you'll need to do is unpack it, attach the pedals, turn the handlebars and ride.
To help you get started we have put together a handy Bike Building Guide, click here.