Retro Electric Bike Buying Guides
Synch Super Monkey UK Review & Road Legality Guide
In-depth UK review of the Dorset-built Synch Super Monkey: 250W Bafang motor, street legality, bench seat pedalling ergonomics, specs and commuting test.

Quick facts
- Designed, assembled, and quality-tested in Dorset, United Kingdom.
- 100% road-legal 250W Bafang rear hub motor complying with UK EAPC regulations.
- Features premium 6061 hydroformed aluminium frame and Tektro hydraulic disc brakes.
- Available with battery options from 600Wh to over 1000Wh for genuine 40+ mile UK range.
- Eligible for major UK Cycle to Work schemes including Green Commute Initiative.
British Craftsmanship: Dorset Frame Build and Assembly Quality
While many retro scrambler e-bikes are generic catalog imports from overseas factories, the Synch Super Monkey stands apart as a British success story. Engineered and assembled at Synch's workshop in Dorset, England, the Super Monkey features a purpose-built 6061 aluminium loop frame built to handle demanding UK road and trail conditions.
The manufacturing quality is immediately evident in the welds, powder-coated finish, and stainless steel hardware chosen specifically to resist corrosive British winter road salt. Unlike cheap steel-framed imports that rapidly develop surface rust, the Super Monkey's lightweight alloy chassis maintains structural integrity year after year.
Local assembly also ensures exceptional after-sales support. Replacement swingarms, proprietary seat covers, motor cables, and custom battery mounts are readily stocked in the UK with rapid dispatch.
250W Bafang Powertrain and Full UK EAPC Statutory Compliance
The core of the street-legal Synch Super Monkey is its Bafang 250W continuous rated rear hub motor. Delivering up to 65Nm of torque, the motor provides strong, dependable hill-climbing assistance while strictly honouring the 15.5mph (25km/h) statutory cut-off required under Electrically Assisted Pedal Cycles Regulations 1983 (amended 2015).
The pedal assistance system relies on an integrated cadence sensor programmed for progressive, predictable power delivery. Power ramps up smoothly through 5 distinct assistance levels without the jerky, unpredictable surging common on poorly tuned budget controllers.
Synch sells dedicated road-legal configurations with no unassisted twist throttle installed. This ensures riders can commute through London, Manchester, or Edinburgh with complete confidence that their cycle satisfies all DfT guidelines.
Bench Seat Pedalling Mechanics: How It Performs on Daily UK Commutes
Like most monkey-bike and scrambler-inspired e-bikes, the Super Monkey features an elongated, custom-stitched bench seat mounted to the rigid subframe. The seat height is fixed at approximately 840mm (33 inches).
For riders between 5ft 7in and 6ft 1in, the relationship between the crank arms, saddle, and mid-rise BMX-style handlebars provides a remarkably natural, upright commuting posture. Riders can slide backwards along the bench to stretch their legs on flat stretches, or shift forward over the cranks for increased leverage when tackling steep inclines.
For riders under 5ft 4in, standover height can feel tall. We advise test-riding at a certified Synch dealer to verify that your feet comfortably reach the ground when stopped at traffic lights.
Technical Specifications, Battery Options, and Real-World Range
Synch offers several battery configurations utilizing Grade-A Samsung or LG lithium-ion cells, ranging from a standard 48V 13Ah pack (624Wh) to high-capacity 48V 20Ah setups (960Wh):
Standard 624Wh Pack: Delivers an honest 30 to 45 miles of pedal-assisted riding in mixed urban terrain.
Extended 960Wh Pack: Capable of 50 to 70 miles under moderate assistance, making it ideal for longer rural commutes.
Braking: High-performance Tektro hydraulic disc brakes paired with 180mm stainless steel rotors provide excellent wet-weather stopping power.
Gearing: Shimano 7-speed drivetrain with a wide-ratio cassette ensures you can maintain comfortable pedalling cadences between 10mph and 20mph.
Buyer's Verdict: Synch Super Monkey vs Super73 & Imported Scramblers
If you want the rugged motorcycle aesthetic of a scrambler e-bike but require guaranteed UK road legality, reliable domestic customer service, and Cycle to Work scheme financing, the Synch Super Monkey is one of the safest and most satisfying investments available.
Compared to imported models like the Super73-Z or Engwe M20, the Super Monkey offers superior local parts availability, robust hydraulic braking, and verified EAPC compliance that protects riders from roadside police complications.
Useful next steps
Start with the UK electric bike rules hub and the Retro Electric Bike Buying Guide UK: How to Choose a Vintage-Style E-Bike.
FAQs
Is the Synch Super Monkey legal on UK roads and cycle paths?
Yes. The 250W Synch Super Monkey is fully road-legal across the UK as an Electrically Assisted Pedal Cycle (EAPC). It requires no driving licence, helmet, vehicle tax, or compulsory insurance.
Can I buy a Synch Super Monkey through the Cycle to Work scheme?
Yes. Because the 250W Super Monkey is certified as a pedal cycle, it is eligible for major UK salary-sacrifice schemes including the Green Commute Initiative, Cyclescheme, and Bike2Work.
Does the Synch Super Monkey have a throttle?
Road-legal UK editions are supplied as pedal-assist only. An unassisted full-speed throttle is not fitted on street-legal models, ensuring complete compliance with UK EAPC law.
Where is the Synch Super Monkey made?
The Super Monkey is designed, hand-assembled, and quality-tested in Dorset, England, utilizing custom British-engineered aluminium frames and premium Bafang/Tektro components.
What is the top speed of the road-legal Synch Super Monkey?
Electric motor assistance cuts off precisely at the legal limit of 15.5mph (25km/h). You can pedal faster using leg power on downhills or flat stretches.


