Specifications
Frameset
| Frame | The frame of the Rockrider E-ST 520 electric MTB is made of 6061 aluminium with hydroformed tubes. Why? The battery sits snugly on the frame to improve the robustness of this electric mountain bike.The forged aluminium parts make it compatible with the new 27.5"+ tyre format (wider than the 27.5") in the rear, while remaining easy to manoeuvre. We've kept a frame geometry with short bases for easier steering. |
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| Suspensions | Ride over obstacles (roots, pebbles, stones, etc.) easily thanks to the Rockshox 30 SILVER fork with 120 mm of travel.This fork has:- A coil spring for maximum sensitivity and reliability - a lockout and rebound adjustment for better control, depending on the terrain |
Wheels
| Wheels | So you feel safe on any terrain, and for traction suited to your motor, the E-ST520 electric MTB is equipped with Hutchinson Cougar 27.5" tyres with a 2.4" cross-section. Our test riders particularly liked these tyres for their good grip. Mounted on wide rims, these tyres ensure grip, traction and comfort on any terrain. |
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Brakes
| Brakes | No matter the conditions you ride in (dry, muddy, wet), the Tektro TKD88 hydraulic disc brakes at the front and rear provide powerful, progressive braking. Oversized 180mm diameter discs provide even more power. |
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Components
| Handlebar | The adjustable stem brings the E-ST 520 controls to your hands. The all-aluminium ROCKRIDER stem is 70 mm (size S), 80 mm (size M/L), or 90 mm (size XL) and can be raised to 5 adjustment intervals: + 0mm, + 7.5mm, + 15mm, + 22.5mm, + 30mm.In detail:- 720mm oversize ROCKRIDER SPORT aluminium handlebar- ROCKRIDER SPORT "soft touch" ergonomic grips for good grip and a comfortable feel |
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| Saddle | Since your mountain bike rides will get longer and longer, it is important to have a suitable seat. So our teams designed the exclusive ROCKRIDER Ergofit Evo saddle. It fits all hip sizes and has a curved shape that is particularly good for sport trail rides.The 31.6 mm aluminium seat tube ensures compatibility with most dropper and suspension seat posts on the market. |
| Pedals | The E-ST520 electric bike comes with ROCKRIDER Flat MTB platform pedals. The pedalling surface is wider and dots are more pronounced for better foot contact on the pedal. |
E-System
| Battery | Our battery is equipped with battery cells from LG or Samsung, (LGC-MG1 or SDI), which are known for their high level of reliability and safety.Our battery supplier sources its minerals responsibly and sustainably, and is part of the "Responsible Minerals Initiative". - Our Rockrider mountain bike team has designed a battery that locks in place with a simple lever. Child's play!This locking system stops the battery getting shaken when you go adventuring on rough terrain.There is also a lock in case you want to stop your battery getting stolen. For example, if you park your bike in the street. |
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| Motor | The BROSE T Aluminium central motor is specially designed for high altitude mountain biking:- 70 Nm torque to handle large obstacles and steep gradients- metal housing for maximum durability- belt for an ultra-quiet motor- sealed bearings to hold up to tough environments while mountain biking |