The SHENGMILO S600 is a rugged, full-suspension, fat-tire electric bike that delivers exceptional power and versatility. Priced between £1,500–£1,700, it combines dual 1000 W rear hub motors (totaling 2,000 W) with a high-capacity 840 Wh Samsung batter, making it ideal for off-road adventures, challenging climbs, and dependable commuting. Its standout features—dual hydraulic brakes, 3.0″ fat tyres, and adjustable suspension—suggest serious intent.
Over 300 km of mixed-terrain riding, including forest trails, beach runs, gravel roads, and urban streets, we evaluated its speed, torque, charging ease, chassis resilience, and overall ride feel. The review focuses on whether the S600 justifies its robust spec sheet and price tag—evaluating real-world power delivery, riding comfort, braking control, and how it measures up against similarly priced, single-motor fat bikes. If you’re looking for a fat tire e-bike that can ascend steep tracks, cruise at higher speeds, and handle varied conditions without premium brand pricing, you’ll want to see if the S600 lives up to its promise.
Specs at a Glance
- Motors: Dual 1000 W brushless, combined 160 Nm torque
- Battery: 48 V 17.5 Ah (840 Wh) Samsung, removable
- Weight: 35.5 kg (78 lbs)
- Top Speed: ~50 km/h (factory limited)
- Rider Fit: 170–200 cm range
- Tyres: 26″ × 3.0″ fat tyres
- Brakes: Dual hydraulic disc
- Suspension: Full; front coil fork, rear DNM shock
- Gearing: Shimano 7-speed
- Price: £1,500–£1,700
Design and Build Quality
The SHENGMILO S600 boasts a strong yet stylish 6061 aluminium frame with clean welds and integrated wiring, giving it a professional built-to-last appearance. The geometry has been designed thoughtfully to suit fat tyres and accommodate rugged terrain, appearing well-balanced despite the dual-drive system. Powder-coat paint resists scratches and stays clean after long rides.
Its 840 Wh Samsung battery, built seamlessly into the downtube, locks securely yet is easily removable for indoor charging. The frame supports a full metal fender set and a sturdy rear rack capable of carrying cargo or panniers—ideal for campers or commuters carrying gear.
Component fit and finish across the board feel solid: from the DNM rear shock and dual suspension fork to the Shimano 7-speed drivetrain, everything is snug and functional without rattle or looseness. The combination of full suspension and 3.0″ fat tyres maintains a clean, coordinated look: purposeful yet refined. Though heavy at 35.5 kg, weight feels well-distributed thanks to the dual motors and central battery. The overall construction gives confidence that this bike can handle serious off-road stress and urban commute abuse with minimal assembly issues.
Motor Performance and Power Delivery
The S600’s twin 1000 W brushless motors deliver exhilarating acceleration and climbing power from the start. On flat terrain, throttle engagement brings the bike to 35–40 km/h within seconds, with a factory-limited top speed of around 50 km/h easily maintained on open roads.
Climbing is where the dual-motor setup shines. Steep forest trails, loose sand slopes, and moderately steep urban hills were all achievable with steady power. The combined 160 Nm torque means power continues even on inclines up to around 30–40°, though traction in soft sand may still limit maximum slope performance.
Throttle control is responsive and intuitive—with a half-twist mechanism that offers immediate power without jerkiness. Pedal assist works well, but we found most riders preferred throttle mode for easier terrain and PAS modes for longer endurance rides. Compared directly to similar single-motor fat bikes, the S600’s dual motors offer notably better pulling power and off-road capability.
Motor noise, a common complaint in fat bikes, is minimal here—quiet even when running at high speeds. During sustained power usage the system remains cool, and we didn’t notice any overheating issues over the 300 km test period. Overall, power delivery feels smooth, controlled, and confidence-inspiring, making this bike feel more capable than its price might suggest.
Battery Range and Charging
The 840 Wh Samsung battery gives the S600 serious range. Manufacturer estimates suggest 80–90 km on pedal assist and 40–50 km on pure throttle, which our testing confirmed. With moderate assistance, we achieved consistent 80 km on mixed terrain; heavier throttle usage reduced range to around 45 km.
Charging via the included 2 A charger took 7–8 hours. While slower than some fast-charging bikes, the larger capacity justifies the longer time. Battery removal is smooth, and the key-lock adds security. A sturdy carry handle on the pack makes transport easy.
Performance remained reliable after 20 full-charge cycles, with less than a 5% drop in overall capacity—indicating solid longevity. A slight fade in charge read-out occurred over longer rides, but battery management system kept actual performance steady.
In summary, the S600’s range is excellent for off-road or explorer use, and the battery’s build quality supports reliable use through many seasons. Riders focused on throttle-heavy rides might consider packing a spare, but most commuters and adventurers will find the range ample for most long-day outings.
Ride Quality and Comfort
Comfort on the S600 is surprisingly good given its heavy build. The double-shoulder suspension fork absorbs most bumps and impacts, while the DNM rear shock smooths out rear-end jolts. Combined with wide 3.0″ fat tyres, the setup delivers plush ride feel across gravel, mud, and roadside imperfections.
This bike’s geometry supports an upright but engaged riding posture. Handlebars feel natural for adventurous riding while allowing swift urban maneuvering. Tested riders between 170–200 cm reported neutral riding positions with no strain over 90‑minute sessions.
Sitting on long-distance trails, the suspension handled continuous bumps without significant quality loss, though heavier riders may wish for firmer preload settings on the rear shock. Fat tyres floated over sand and soft surfaces, and the bike remained composed at speeds of up to 45 km/h.
Urban stop-and-go riding presented no issue, though the bike’s weight adds effort at times. However, the overall comfort remains reliable, and the fat tyres demonstrate remarkable shock absorption—even during winter pothole rows.
All in all, the S600 is comfortable enough for multi-hour adventure rides or daily rugged commutes, though some suspension tuning may further enhance ride quality for heavier users or rougher terrain.
Braking and Handling
The S600 offers strong braking performance thanks to dual hydraulic disc brakes matched with 3.0″ fat tyres. Modulation is smooth and responsive, providing consistent stopping power even under load or downhill use. In wet or muddy conditions, brake performance remains stable—though extended descents may benefit from upgraded pads to prevent fade.
Handling is confident and predictable. At speed, the wide tyres and weight yield stability, while cornering—even off-road—feels secure. The bike doesn’t turn sharply due to tyre girth, but riding through tight trail sections remains manageable. Low-speed handling requires deliberate input, but riders quickly adapt.
Weight does make it more sluggish when bringing to a stop but once under motion, the S600 tracks true and offers ample control. Braking cut-off is precise, cutting throttle instantly for safer line control. Overall, braking and handling match the bike’s power and weight, striking a strong balance between control and capability.
Features and Accessories
The S600 is generously equipped: a Yolin LCD colour display shows speed, power, battery, distance, and diagnostics. A half-twist throttle enables pure electric mode, while pedal-activated assist supports distance riding. Both cooling and battery temperatures are monitored via screen.
Full metal front/rear fenders and a rear rack make it truly commuter-capable—ready for touring or grocery hauling. The pack integrates a key-lock for security. The 840 Wh battery is removable, enhancing convenience. Hydraulic brakes provide consistent stopping power, complemented by the supportive fat tyres.
Lacking built-in GPS or smartphone connection may disappoint tech-savvy users. There’s no motor tracking or theft protection beyond the battery key lock. That said, this simplicity also means fewer electronics to malfunction in rugged conditions.
The suspension system is adjustable but lacks external lockout. Still, ride adjustment is simple enough—preload knobs and fork lockout provide basic control. Shimano drivetrain shifts smoothly, and overall component fit feels thoughtful, purposeful, and durable enough for all-weather use.
Weight and Portability
At 35.5 kg, the S600 is heavy, ranking near the top of fat bike weights. Lifting it into a vehicle or onto storage racks generally requires two people—but thanks to balanced frame geometry and integrated carry points, it’s manageable.
Ride-on portability is decent; the fat tyres offer solid rolling support when pushing the bike over short flat distances. It doesn’t fold but fits standard bike racks after removing the front wheel—typical of fat bikes. For riders willing to commit to the weight trade-off, the bike remains surprisingly accessible for transport and handling.
Value for Money
At £1,500–£1,700, the S600 offers tremendous value. Dual 1000 W motors, 840 Wh battery, full suspension, and hydraulic brakes would normally cost much more. Compared to single-motor models in this price range, the S600 delivers superior climbing, traction, and comfort.
Some high-end competitors may offer lighter carbon components, electronic shifting, or integrated tech features—but often at a price premium. Shengmilo backs the bike with warranty coverage and parts availability, though early checks on brakes and suspension are advisable.
For adventure seekers or commuters who traverse mixed terrain and need both power and resilience, the S600 is a rare offering. Riders planning heavy daily use or significant off-road miles will benefit most; urban-only riders may find the weight challenging. Overall, its performance-to-price ratio is outstanding.
Pros and Cons Summary
Pros
- Dual 1000 W motors with strong 160 Nm torque
- Massive 840 Wh Samsung battery, long range
- Full suspension, fat tyres, and hydraulic brakes
- Solid commuter features and build quality
Cons
- Heavy at 35.5 kg, not easily carried
- Long 7–8 hour charge time
- Some brake fade on long descents
- No GPS or smart features
Verdict
The SHENGMILO S600 is a rare blend of power, comfort, and off-road readiness offered at a mid-range price. Its dual-motor setup, substantial battery, full suspension, and fat tyres make it a compelling choice for adventure riders and rugged commuters. While its weight and charge time warrant consideration, these are trade-offs for performance unmatched at this level.
If you’re seeking a formidable fat tire e-bike able to tackle hills, sand, or snow while remaining commuter capable—and you don’t require smart features—the S600 ticks all the boxes. Powerful, stable, and built to last, it represents strong value for riders ready to embrace its hulking presence.
