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Frame 6061 Alloy Stealth Evo, hydroformed frame set, updated Zero Suspension System, 150 mm travel, Forward Geometry, integrated battery, 12 x 148 mm Boost rear axle, tapered head tube, one-piece Monoblock upper rocker, internally routed cables and hoses (HHG), sealed ‘MAX-Capacity’ bearings, extra-large 15 mm axles, exclusive plastic motor covers.
Frame shape Mountainbike
Material Aluminium
Gender Unisex
Weight approx. 20.7 kg
permissible total weight 150 kg
Fork Fox 36 29 Float Performance GRIP, 160 mm, 3 positions, tapered head tube, 15 x 110 mm Boost axle, 44 mm offset. Adjustments: Sweep Adjust compression, low-speed rebound, air preload
Damper Fox Float X Performance EVOL, 185 x 55 mm. Adjustments: Compression damping with 2 modes (Open/Firm), rebound damping, air preload. Trunnion mount at the top, lower bushings: 30 x 8 mm
Manufacturer shift group Sram
Rear derailleur SRAM GX Eagle AXS, Roller Bearing Clutch (T-type), Cage Lock, 1x12-speed
Number of gears 1 x 12
Circuit type Kettenschaltung
Crank handle e*thirteen Helix Core E*Spec Plus, all sizes: 160 mm
Cassette SRAM XS-1275, 10-52T, T-Type, 12-speed
Drive type Kettenantrieb
Freewheel/coaster Freilauf
Pedals included in the scope of delivery nein
Rims Mavic E-CrossTrail SL, 29 Boost, 30 mm internal width, hookless, tubeless-ready, 28 spokes
Hubs Rear: Mavic Infinity hub, ID360 freehub technology, Boost 12 x 148 mm, IS 6-hole, XD freehub; Front: Mavic Infinity hub, Boost 15 x 110 mm, IS 6-hole
Wheel size 29 Zoll
Tyres Rear: Maxxis Minion DHR II 29 x 2.5 WT, Tubeless Ready, 3C MaxxTerra rubber compound, EXO+ Protection, 60 TPI, folding bead; Front: Maxxis Minion DHF 29 x 2.5 WT, Tubeless Ready, 3C MaxxGrip rubber compound, EXO+ Protection, 60 TPI, folding bead
Motor manufacturer Bosch
Engine Performance Line SX
max. torque 55 Nm
Reach up to 80 km
Support for up to 25 km/h
Battery Bosch 400Wh CompactTube
Display Bosch Purion 400
Brakes SRAM Code Bronze Stealth, extra-large 4-piston brake caliper, one-piece 200 mm IS 6-hole Centreline brake disc, sintered metal brake pads with steel backing plate
Handlebars ONOFF S6 1.0 7050 aluminium, rise: 25 mm, width: 800 mm, 8° horizontal bend/backsweep, 5° vertical bend/upsweep, 31.8 mm handlebar diameter. Sizes L and XL: rise 1.5.
Seat post ONOFF Pija telescopic seatpost, internal cable routing, diameter 31.6 mm, 1 remote lever with bearing, size S: 140–115 mm (388–235 mm), size M: 160–135 mm (428–255 mm), size ML: 180–155 mm (468–275 mm), Size L: 210–185 mm (528–305 mm), Size XL: 210–185 mm (528–305 mm)
Saddle Fizik Terra Aidon X5 145 mm
Stem ONOFF S6 30 mm 0°, forged 6061 aluminium + CNC, 31.8 mm handlebar diameter
Accessories/Miscellaneous Charger included

Only the best components for our high-end STEALTH Alloy frame.

For anyone looking to get the very most out of the SLY, the SLY RR is the right choice. For the suspension, the SLY RR features a Fox 36 29 Float Performance Grip fork with 160mm of travel and a Fox Float X Performance EVOL shock. SRAM Code Bronze Stealth 4-piston brakes and 30mm-wide Mavic E-CrossTrail SL wheels complete the build. The carbon handlebars, stem, grips and Pija seatpost are from the ONOFF S6 series. The Pija seatpost comes with an installation length of between 140 and 210mm, depending on frame size.


This bike will arrive (almost) fully assembled. All you need to do is straighten the handlebars and fit the pedals.

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27 June 2026 11:38

Rating with 5 out of 5 stars

Perfekt. Jederzeit gerne wieder

Perfekt. Jederzeit gerne wieder

Information on the manufacturer (information obligations under the GPSR Product Safety Regulation)
Blue Factory Team S.L.U.
Nicolas Copérnico 4
03203 Moose, Spain

Safety information for bicycles, e-bikes and children’s bikes

The safe and long-term use of bicycles, e-bikes and children’s bikes requires careful checks, regular maintenance and proper handling. These guidelines provide practical advice on safe use and should be followed in conjunction with the manufacturer’s instruction manual.



1. Safety checks before riding

The following checks should be carried out before every ride :

Brakes and steering : Test that the brakes are working properly and ensure that the steering is smooth and stable.

Tyres and wheels : Check that the tyre pressure is correct and that the wheels and quick-release mechanisms are securely fastened.

Fittings : Check that attachments such as mudguards, luggage racks, the saddle and pedals are securely fastened.

Accessories and load : Ensure that luggage and accessories are correctly fitted and that the maximum load capacity is not exceeded.



2. Technical safety and permitted use

Component inspection: Regularly check safety-critical components such as the frame, fork, handlebars, seat post and brakes for damage. Do not use the bicycle if there are any visible defects.

Maximum load capacity : Observe the weight restrictions for the total weight (bicycle, rider, load and, where applicable, trailer). You will find the specifications in the manufacturer’s information.

Proper use : Only use the bicycle or e-bike within the intended usage category. Improper use poses safety risks.

Accessories and modifications : Only use approved accessories such as child seats or trailers, and do not carry out any unauthorised modifications, particularly to the drive system of e-bikes.



3. Special notes for e-bikes

Battery and charging:

Only use batteries and chargers approved by the manufacturer.

Charge the battery in safe locations and in accordance with the temperature specifications.

Remove the battery before transporting the e-bike.

Electric assistance:

Familiarise yourself with the assistance modes and the push assist function. Test the e-bike first in a safe environment, particularly with varying loads or on difficult terrain.

Running in disc brakes:

Run in new brakes before your first long ride to ensure optimum braking performance.

Transport guidelines:

When transporting the bike, follow the manufacturer’s instructions and comply with legal regulations.

Component manuals:

For detailed information on e-bike systems from drive component manufacturers, please see here:

For Fazua motors: 

https://fazua.com/de/support/help-center/knowledge-base/fazua-app/

For Bosch motors: 

https://help.bosch-ebike.com/de/help-center#wss-manuals

For Shimano motors: 

https://lifestylebike.shimano.com/de/support/



4. Special safety rules for children’s bicycles

Duty of supervision: Children must only use bicycles under the supervision of a responsible adult.

Suitable size and equipment : Ensure that the bicycle is age-appropriate and that all safety features (e.g. brakes, reflectors, chain guard) are in good working order.

Loading and accessories : Securely attach child seats and luggage racks, and take care not to exceed the load capacity.



5. Care and maintenance

Cleaning : Use a soft cloth and mild cleaning products. Avoid high-pressure washers to prevent damage to electrical and mechanical components.

Regular inspections : Schedule regular servicing with a qualified specialist workshop to check for wear and tear and ensure safety.

Spare parts : Only use original or approved spare parts to maintain the bike’s functionality.



6. What to do after your ride

Document any damage : If there is any visible damage or malfunction, do not continue to use the bicycle. Have it checked by a specialist workshop.

Avoid hot components : Avoid contact with hot components such as brake discs or drive units to prevent burns.



Final notes

This safety information provides you with a comprehensive overview of the safe use of bicycles, e-bikes and children’s bikes. Always follow the manufacturer’s instruction manual and contact a specialist retailer if you have any questions. Safe and responsible use not only ensures your safety but also extends the service life of your bicycle.

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