Rock Machine Catherine

Rock Machine Catherine

  • Motor Type: Mid Drive Motor for consistent power.
  • Battery Capacity: 500Wh with removable feature.
  • Range: Up to 60 miles on a single charge.
  • Frame Material: Alloy Al-6061 T6 Custom Tubing for durability.
  • Gears: 9-speed Shimano Altus for versatile riding.

Our Verdict: The Rock Machine Catherine e90-29 is a reliable and versatile e-bike, with stand out power making it a top buy for a broad range of cycling needs with its sturdy frame and efficient gearing.

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The Rock Machine Catherine e90-29 Touring Electric Mountain Bike is setting a new benchmark for the modern cyclist who craves a blend of adventure and efficiency. Designed specifically for women, this e-bike boasts an array of features tailored to enhance the riding experience over diverse landscapes. With its lightweight frame, sophisticated motor system, and thoughtful geometry, it caters to both the avid adventurer and the eco-conscious commuter. In a market brimming with options, the Rock Machine Catherine stands out as a versatile and reliable companion on both trails and city streets.

Rock Machine's Design

The foundation of any great bike is its frame, and the Catherine e90-29 does not disappoint. Crafted from Alloy Al-6061 T6 Custom Tubing, it features Smooth Welding and a Fun Ride Geometry designed to maximize comfort without sacrificing performance. This lightweight yet durable frame ensures that riders have the optimal blend of efficiency and durability required for both long-distance touring and gnarly trail rides.

Advanced Mid Drive Motor System

Powering the Catherine e90-29 is the Sport Drive mid-motor, delivering 250W of power and 85nm of torque. This system ensures smooth and responsive power delivery, making climbs a breeze and ensuring you can cover greater distances with less fatigue. Together with the semi-integrated battery, riders can enjoy a range of up to a whopping 60 miles, making it an excellent choice for day-long adventures and commuting alike.

Superior Riding Experience

From the Shimano Altus 9-speed gearing to the hydraulic disc brakes, every component has been chosen to offer a smooth and controlled ride. The 29" WTB Nineline Comp wheels, paired with their reflective tape, offer great traction and safety during night rides, while the front suspension fork with 75mm travel ensures that you can tackle rough terrain with confidence.

Practically Equipped

Aside from its performance features, the Rock Machine Catherine is designed with practicality in mind. It comes fully kitted with mudguards, battery-fed lights, cargo rack, kickstand, and lock. Whether you're heading out for the weekly shop or packing for a weekend trail adventure, this bike is ready to handle your needs.

Customizable and Convenient

With a focus on rider-specific customization, the Catherine offers choices in different frame sizes catering to a wide range of rider heights. Coupled with an ergonomic seating position and adjustable components, this bike ensures a comfortable fit tailored to your riding style.

All Terrain Action

Riding the Rock Machine Catherine e90-29, you'll quickly find that it's built to handle a variety of conditions. The bike's geometry and suspension offer stability and comfort when you're hammering down singletrack trails or scaling steep climbs. Thanks to its efficient motor, you can venture further into the unknown, tackling terrain that might have seemed daunting before.

The nimble handling and responsive gear changes allow you to maintain control in challenging conditions, whether you're navigating a tight switchback or confronting slippery mud. Rain or shine, the included mudguards and all-weather tires ensure that you remain dry and gripped to the path ahead.

Rock Machine Catherine Tech Specs

Model Name Rockmachine Catherine e90-29 Touring Womens Electric Mountain Bike
Frame Size S, M
Frame Alloy Al-6061 T6 Custom Tubing, Smooth Welding, Fun Ride Geometry
Maximum Range Up to 60 miles
Motor Type Mid Drive Motor
Approx Weight 25kg
Recharge Time 7.5 Hours
Headset FSA Orbit 1.5E No.57b, Zero Stack, 1-1/8"-1.5"
Fork SR Suntour Mobie25 RLR, Tapered, Coil, QR Type, Lockout, 75mm Travel
E-Bike System Sport Drive - Middle Drive Unit
Drive Unit Sport Drive MD250S, 36V, 250W, 85Nm, Torque/Rotation Sensor
Battery Sport Drive, 36V, 500Wh, On-Frame Mount
Display Sport Drive Grip Display
Charger Sport Drive Standard Charger, 36V/2A
Max Support Speed 25 km/h
Charge Cycles 1000/80% Of Original Capacity
Distance Range 100 Km (1st Level Of Support)
Gears 1x9
Shifter Shimano Altus SL-M2010-9R RapidFire Plus, 9-Speed
Rear Derailleur Shimano Altus RD-M2000 Shadow
Crankset Wheel Top ED2L, 38t
Cassette Shimano CS-HG200-9, 11-36t
Chain KMC E9S
Pedals Marwi SP-827 Sandblock Non/Slip Pedal
Handlebar ONE1 Alloy, MTB AL-325BT, 6° Upsweep, 9° Backsweep, 25mm Rise, 680mm, 31.8mm
Stem ONE1 TDS-C301 Alloy, 31.8xE65mm, +6°
Grips Velo VLG-1879D2, Ergo Grip
Brakes Shimano BL-MT200/BR-MT200, 160/160 Rotor, Hydraulic Disc Brake
Saddle WTB Koda Sport
Seat Post ONE1 Alloy, SPS 405, 27.2x350mm
Wheels WTB SX19, 32h
Tyres WTB Nineline Comp, 29x2.25", Reflective Tape
Front Hub Shimano Deore HB-M6010, 32h, Center Lock, 15x100mm Thru Type Axle
Rear Hub Shimano Alivio FH-M4050, 32h, Center Lock, M10x135mm, QR Type
Spokes Sapim Galvanized Black


The Rock Machine Catherine e90-29 isnt just another e-bike in the market- it's a comprehensive package that promises adventure, reliability, and efficiency. From its advanced motor system to the practical inclusions like mudguards and lights, it's clear that this bike is designed with the rider in mind. Rider testimonials praise its comfort over long distances and its capability to tackle various terrain with ease. Whether you're commuting to work or exploring new trails, the Catherine is highly recommended for anyone looking for a high-quality, versatile electric mountain bike. Its seamless synthesis of technology, design, and experience makes it a standout choice for the modern cyclist.