CUBE Reaction Hybrid SLT 750 review

Where the Reaction Hybrid SLT 750 fits

The clearest match is riders who value top-tier hardtail components and long range, particularly where this stocked build is competitively priced against newer but lower-spec Reaction models. Compare the complete specification and available independent coverage before choosing a size or variant.

Motor, controls and UK legality

The motor is Bosch Performance CX Generation 4 (85 Nm), Smart System.. The controls are Bosch Kiox 300 with LED Remote.

The fourth-generation Bosch Performance Line CX supplies a quoted 85Nm through a broad 10–51T twelve-speed drivetrain. It lacks the latest platform’s headline maximum, yet 85Nm remains strong for hardtail climbing and has extensive service and real-world history.

A Kiox 300 with LED Remote offers richer ride information than the Purion controllers on cheaper builds. As with any previous-generation stock, firmware status, diagnostic history and battery cycles should be checked by a Bosch-qualified dealer at handover.

For use as an electrically assisted pedal cycle in Great Britain, the maximum continuous rated motor power must not exceed 250W, assistance must cut out by 15.5mph and the pedals must be able to propel the bike. Check the label and delivered configuration rather than relying on a category name.

Battery, charging and realistic range

The listed battery is Bosch PowerTube 750. No numerical range is stated in the accessible listing; route, rider, weather and assistance level materially affect distance

The 750Wh PowerTube is only modestly smaller than an 800Wh pack and remains suitable for long trail days. Its practical health matters more than the 50Wh headline difference, especially if the bike has spent a long period in storage.

Prospective buyers should ask for battery diagnostic information and warranty commencement terms. Range varies with mode and terrain, and an older battery’s condition cannot be established from nominal capacity alone.

Use only the approved compatible charger, charge away from escape routes and stop using a battery that is damaged, swollen, leaking or unusually hot. Ask for the replacement-pack price and warranty conditions before the original battery becomes a problem.

Frame, fit and ride character

The frame specification is Aluminium Superlite, Gravity Casting, Agile Ride Geometry, Fully Integrated Battery, Advanced Internal Cable Routing. Fork and suspension details are Fox 34 Float AWL, 2-Position Sweep-Adjust RAIL Damper, Tapered, 15x110mm, E-Bike Optimized, 120mm. The tyres are Schwalbe Smart Sam, Performance, Double Defense, 2.6.

The e-bike-specific Fox 34 Float AWL fork provides 120mm of air-sprung travel and useful damping adjustment. Shimano XT four-piston brakes with 203mm rotors and tough 2.6-inch Smart Sam tyres create a far more controlled package than entry Reaction builds.

Independent testing praises the SLT’s uncomplicated handling, equipment and range, while noting its weight and the absence of a dropper. The fixed post is the obvious weakness for steep descents and should be included in any upgrade budget.

Brakes, transmission and everyday equipment

The bike uses Shimano XT BR-M8120, Hydr. Disc Brake (203/203). Transmission is Shimano Deore SL-M6100-IR, Direct Attach, Rapidfire-Plus; Shimano XT RD-M8100-SGS, ShadowPlus, 12-Speed; Shimano Deore CS-M6100, 10-51T. The equipment information is CUBE Performance Post, 30.9mm.

Tubeless-ready wheels and a proven Shimano twelve-speed drivetrain make the platform easy to tune for off-road use. The frame’s internal integration is tidy, although this listing does not advertise the same current accessory interfaces as the newest chassis.

This is a performance hardtail rather than a fitted commuter. Buyers wanting mudguards, lights or a rack should verify compatible mounts and avoid assuming current Reaction accessories fit an earlier frame.

What the published evidence tells us

The recorded price for this build is £2,849. Prices can differ by colour or size, and stock can change; a discount against a reference price does not by itself establish value.

The seller provides an unusually complete exact-build specification, including Bosch generation, Fox fork and XT brake models. Because this is an older model offered later, condition, support and warranty questions are more important than simply removing the year from the name.

Bike Magazin and EMTB-Test independently support the bike’s strong equipment, long-range ability and accessible hardtail handling. They also identify meaningful limitations—weight, no dropper and fit considerations—so the evidence is more balanced than a component-list appraisal alone.

Advantages and disadvantages

The useful comparison is whether the complete build suits the regular route, storage and service plan. A premium motor cannot compensate for poor fit, while a modest component can be entirely sensible on the right type of bike.

• Advantage: Excellent Fox 34 fork
• Advantage: Powerful XT four-piston brakes
• Advantage: Proven 85Nm Bosch CX system
• Advantage: Large 750Wh battery and premium display
• Disadvantage: No dropper post
• Disadvantage: Older stored build needs battery and warranty checks
• Disadvantage: Heavy for a hardtail
• Disadvantage: Accessory compatibility is less clear than on the newest frame

Buying checks and RideIn verdict

Confirm the exact product code, frame size, colour, battery capacity, assistance configuration and included equipment before paying. Ask who will handle electrical diagnosis, warranty labour and replacement components, then test the brakes, controls and fit before committing to regular use.

The SLT 750 can be better equipped than a newer bike at the same sale price, and its 85Nm Bosch system is hardly weak. It is a smart buy only after battery health, warranty and fit are verified—and after budgeting for a dropper if steep trails are planned.