SLY RR

ENDURO / LIGHT e-MTB

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SLY RR: DRESSED TO THE NINES

Our most high-tech Stealth Alloy frame ever deserves nothing less than the best.

The RR build is a step up if you want to get even more out of your SLY. FOX suspension provides the 160mm Fox 36 29 Float Performance GRIP fork and a Fox Float X Performance EVOL shock. SRAM Code Bronze Stealth 4 piston brakes with 200mm rotors keep things from getting out of hand on the steeps, and Mavic E-CrossTrail SL 30mm wheels offer the best balance of compliance / rigidity out there. ONOFF have you covered with a selection of components from the all new S6 range and include a carbon fibre bar, a stem, grips and the Pija seatpost with lengths varying from 140mm to 210mm depending on frame size. The SLY RR comes in the gorgeous Black / Nimbus Grey / Tonic Gold colourway.

SLY RR

”They're really passionate about what they're doing and I think with this one they've Hit The Sweet Spot between ride quality, the blending of price and performance.”

SLY RR by Brian Cahal

“There aren’t many bikes I could’ve held on with riding blind like that… I’m just incredibly impressed with what Mondraker is doing — the suspension, the kinematics, the geo… it really works for me.”

Reviews

Helmut Grothaus

Eine tolle aktive Geometrie Verarbeitung Top. Sehr schönes Design. Mfg

2025 September

Cristiano Petrucci

Amazing e-bike

2025 September

Nicolas Prévot

Une géométrie de cadre juste parfaite à mon goût, des périphériques au top, à voir maintenant la fiabilité.

2025 September

Joan Josep Rosselló Gaià

La bicicleta en general está muy bien. La relación calidad precio está muy bien. El detalle que creo que se podría mejorar es el tipo de enganche que lleva la tija para agarrar el sillín. Hace un poco de ruido y de vez en cuando se mueve lateralmente. Por lo demás está muy bien.

2025 September

Alberto Tempia

Decisamente più performante della Chaser R che avevo in precedenza . Una bella bici davvero

2025 September

David Ramos vilanova

Funcionamiento perfecto!! He quedado sorprendido con el sistema de suspensión

2025 September

Alexander Schulz

Super Fahrgefühl im Up- Downhill ( Enduro) Maximales vertrauen in das Bike vom ersten Moment an!!!

2025 September

Maruccio Farinaccia

Nel complesso una buona bici. Avrei solo da segnalare degli aspetti che, secondo me, andrebbero migliorati, visto il costo della bici: -Il motore risponde con ritardo alla richiesta di assitenza, secondo me, dovuto al fatto di avere il magnete sulla valvola, sarebbe meglio una ruota fonica. - le pedivelle hanno la vite di fissaggio che si svita nel senso della pedalata(!!!), al primo utilizzo ho perso la pedivella sinistra. Una volta sistemata con frena filetti, il problema si è ripresentato nuovamente.

2025 September

Kyle Landskroner

very quiet motor.

2025 August

Elias Samuel Del Pino Fernandez

La bicicleta de enduro eléctrica me ha sorprendido muy positivamente. El sistema de suspensión ofrece un gran rendimiento, absorbiendo de manera eficaz y transmitiendo mucha confianza en terrenos complicados. En las curvas de estilo enduro destaca por su agarre, lo que la hace muy divertida y estable al mismo tiempo. Como punto de mejora, echo en falta una mayor personalización en los ajustes para afinar aún más la experiencia de conducción, así como la posibilidad de montar rueda delantera de 29” para quienes prefieren esa configuración.

2025 August

Components

Technical specs

Frame

6061 Alloy Stealth Evo, hydroformed tubing, Updated Zero Suspension System, 150mm travel, Forward Geometry, internal battery, Boost 12x148mm rear axle, tapered head tube, one-piece Monoblock upper link, HHG internal cable routing, MAX capacity sealed bearings, oversize 15mm axles, exclusive plastic motor covers.

Sizes

S: 380mm / M: 410mm / ML: 435mm / L: 460mm / XL: 490mm
Rear shock

Fox Float X Performance EVOL, 185x55mm. Settings: 2-position compression (Open/Firm), rebound, air preload. Trunnion top mount, 30x8mm bottom bushings

Shock settings

CS40 compression, RL60 rebound, Rezi B40, LML, 0.2 volume spacer
Fork

Fox 36 29 Float Performance GRIP, 160mm, 3 Position, tapered steerer tube, Boost 15x110mm axle, offset 44mm. Settings: sweep adjust compression, low-speed rebound, air preload

Headset

Acros custom IS52/ZS56, 1-1/8", 1.5" head tube, Internal cable routing, sealing plugs without blocklock
Stem

Onoff S6 30mm 0º, 6061 forged alloy + CNC, 31.8mm barbore

Handlebar

Onoff S6 1.0 7050 alloy, rise: 25mm, width: 800mm, 8º backsweep, 5º upsweep, 31.8mm barbore. L and XL size: 1.5 rise.
Grips

Onoff Forest, CNC lock-on, 135mm

Seatpost

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

Front brake

Sram Code Bronze Stealth, oversized 4-piston caliper, Centerline 200mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads
Rear brake

Sram Code Bronze Stealth, oversized 4-piston caliper, Centerline 200mm IS 6 bolts one-piece rotor, steel-backed metal sintered pads

Brake lever

Sram Code Bronze Stealth, SwingLink and lever pivot bushings, tool-free reach adjust
Rims

Mavic E-CrossTrail SL, 29 Boost 30mm internal width, hookless, tubeless ready, 28 spokes

Spokes

Mavic 28 straight-pull double butted spokes
Front hub

Mavic Infinity hub, Boost 15x110mm, IS 6 bolts

Rear hub

Mavic Infinity hub, ID360 freewheel technology, Boost 12x148mm, IS 6 bolts XD freehub
Front tire

Maxxis Minion DHF 29x2.5 WT, tubeless ready, 3C MAXX GRIP compound, EXO+ protection, 60TPI, folding bead

Rear tire

Maxxis Minion DHR II 29x2.5 WT, tubeless ready, 3C MAXX TERRA compound, EXO+ protection, 60TPI, folding bead
Crankset

e*Thirteen Helix Core E*Spec Plus, All sizes: 160mm

Rings

Sram X-Sync 2 Eagle 34T, steel, narrow-wide, 104 BCD
Chain

Sram GX Eagle T-Type, 12s, Powerlock

Rear derrailleur

Sram GX Eagle AXS T-Type,12s
Shift levers

Sram Eagle AXS Pod MMX, 12s

Casette

Sram XS-1275, 10-52T, T-Type, 12s
Weight

20,7 kg

Display

Purion 400 / Bosch Mini Remote / Bosch System Controller
Motor

Bosch Performance Line SX (25Km/h) SMART SYSTEM Diagonal, Wide

Battery

Bosch Compact Powertube 400Wh

Geometry

mm / inch


	Frame size	S	M	M/L	L	XL
A	Seattube length	380 mm 14.96"	410 mm 16.14"	435 mm 17.13"	460 mm 18.11"	490 mm 19.29"
B	Toptube length	595 mm 23.43"	615 mm 24.21"	635 mm 25.00"	660 mm 25.98"	685 mm 26.97"
C	Bottom bracket drop	-22 mm -0.87"	-22 mm -0.87"	-22 mm -0.87"	-22 mm -0.87"	-22 mm -0.87"
D	Bottom bracket height	350 mm 13.78"	350 mm 13.78"	350 mm 13.78"	350 mm 13.78"	350 mm 13.78"
E	Chainstay length	455 mm 17.91"	455 mm 17.91"	455 mm 17.91"	455 mm 17.91"	455 mm 17.91"
F	Seat tube angle	74º	74º	74º	74º	74º
G	Effective seattube angle	77º	77º	77º	77º	77º
H	Headtube angle	64,5º	64,5º	64.5º	64,5º	64,5º
I	Fork Offset	44 mm 1.73"	44 mm 1.73"	44 mm 1.73"	44 mm 1.73"	44 mm 1.73"
J	Wheelbase	1225 mm 48.23"	1250 mm 49.21"	1265 mm 49.80"	1290 mm 50.79"	1315 mm 51.77"
K	Headtube length	120 mm 4.72"	120 mm 4.72"	130 mm 5.12"	140 mm 5.51"	150 mm 5.91"
L	Reach	440 mm 17.32"	460 mm 18.11"	480 mm 18.90"	500 mm 19.69"	520 mm 20.47"
M	Stack	633 mm 24.92"	633 mm 24.92"	642 mm 25.28"	651 mm 25.63"	660 mm 25.98"