QR-E MUTE-Plus +B70*1 200Wh E-Bike Kit
272$
Smart Performance & Efficiency
Motor Output: 250W Continuous Power (Reliable & stable output).
Assisted speed: The motor supports assistance up to 23 mph (37 km/h) in testing. Actual speed varies, and local limits apply.
Dual-Clutch System: Features both Electronic and Manual clutch for seamless operation.
Intelligent Drive: Automatic speed adaptation technology ensures a natural riding feel.
Cycling Modes: * ECO: Optimized for energy efficiency.
Sports: Stronger assistance for hills and headwinds.
Energy Recovery: Active regenerative braking (Up to 100W power generation).
B70 High-Capacity Bottle Battery
Design: Stealthy water-bottle shape for a clean look.
Specifications: 25V | 200Wh.
Weight: Lightweight at only 1kg.
Estimated Range: 42–46 km (Assisted riding).
Note: Data represents average real-world values from customer feedback.
Package Includes
QIROLL QR-E Mute Plus Friction Drive Motor
B70 Bottle Battery (25V 200Wh)
DC Charger (25V 2A)
S-2 Control Switch (Handlebar-mounted)
Specialized Installation Tool
Shipping & Pricing
All-Inclusive Price: Price includes VAT; no hidden fees required.
Hassle-Free Delivery: DDP (Delivered Duty Paid) shipping supported in most regions.
Note: Minor customs duties may apply in certain specific regions.
Shipping Time: Estimated 12–18 days.
How to Order: Add the kit to your cart and complete the payment on the shopping cart page.
Smallest and lightest
- Continuous Power
- 250W
- Assisted speed · supported in testing
- 37km/h
- Battery
- 200Wh
- Estimated Range
- 42–46km
- Recovery
- 100W
The battery is the same size and weight as a water bottle
Same as the original balance of the bike. Maximize the joy of cycling.
520 g
QR-E weight
79 × 66 × 40 mm
QR-E size
1.7 kg
QR-E + B70 total
Stealthy water-bottle shape for a clean look
25V | 200Wh. Lightweight at only 1 kg. Estimated range 42–46 km with assisted riding.
200 Wh
Battery capacity
42–46 km
Estimated range
Fix the motor with 2 M5 anti-rust screws
The first installation and adjustment time is estimated at 5–10 minutes. Comes with a variety of installation tools, compatible with most bicycles.
More installation locations
Whether it's road, mountain, folding, or small-wheel bikes.
Automatic two-way
The QR-E kit integrates naturally into the style of the bicycle without being obtrusive.
Special bicycles
Please send us photos of your bicycle for confirmation.
6 × 4 cm clear space
A flat mounting area close enough for the roller to reach the tire.
The motor automatically synchronizes with the tire speed
No resistance. The electronic clutch is a virtual clutch: the motor is not separated from the tire, and electronic control eliminates motor resistance.
Electronic clutch
Enters the operating state quickly and steadily.
Mechanical clutch
The adjustment knob separates the motor from the tire when the battery is depleted or you need to ride unassisted.
Electronic clutch technology
The electronic clutch is a virtual clutch. The way of working is that the motor is not separated from the tire (not through mechanical parts), and electronics are used to eliminate the resistance of the motor. Manually separate the motor from the tire only when the booster is not in use.
Reliability
The third generation of motors has a larger margin, and the motor life is also very long. In extreme cases, the internal controller actively cuts off the power to ensure safety.
Reliable system
QR-E components are designed for friction assist. After years of testing and market feedback, they are reliable, stable and easy to install.
No damage to tires. Easy to replace.
The B70 battery kit comes with a conversion cable; a car charger can be used when purchased separately (12–24V input required).
200Wh power bank
Provides 120W output performance (connector limit).
S-2 control switch
Handlebar-mounted control switch.
Introduction
QIROLL QR-E MUTE introduction
Road bikes, city bikes and folding bikes
Off-road bikes are suitable on asphalt roads. The tire tread pattern needs to be continuous.
QR-E MUTE-Plus + B70
All-inclusive price. Price includes VAT; no hidden fees required.
QIROLL QR-E Mute Plus
Friction drive motor
B70 Bottle Battery
25V | 200Wh
DC Charger
25V | 2A
S-2 Control Switch
Handlebar-mounted
Specialized Installation Tool
Everything you need to fit the kit.
Friction layer × 2
Spare surface-mount friction layers.
Estimated shipping time
12–18 days. North America ships via FedEx from the local warehouse; Europe via UPS on duty-free channels. DDP supported in most regions; minor customs duties may apply in certain regions.
Easy installation
For some special bicycles, please send us photos of your bicycle for confirmation.
