Specialized Turbo Levo 4 Comp Alloy

The Specialized Turbo Levo 4 Comp Alloy is for trail riders who want full-power climbing support, a large integrated battery and an alloy frame with Levo 4's motor, battery and adjustable chassis. It sits above the Levo 4 Alloy and below the carbon Comp, pairing an M5 alloy mixed-wheel frame with FOX suspension, SRAM Eagle 90 Transmission and SRAM Maven Bronze brakes. Long trail days, technical climbs, steep natural descents and repeated trail-centre laps are the rides it is meant for, rather than light-assist cruising.

It is the current UK model in the Levo 4 generation, also called G4, with an original UK RRP of £5,499.

Levo 4 power and the 840Wh battery

Specialized's 3.1 motor delivers 105Nm of torque and 810W of power, fed by an 840Wh battery. The electric system matches non-S-Works carbon Levo 4 builds, so choosing alloy doesn't mean less assistance or a smaller battery. Specialized claims up to five hours of riding time, but assistance level, hills, rider mass, temperature and tyres all change what you actually see. A Specialized 4A charger comes with the bike.

A MasterMind T3 2.2in colour display and the Specialized App let you tune the motor, while Turbo System Lock and Apple Find My help with everyday security. The controls are there to make a full-power system usable on a long day, not to dress it up.

Mixed-wheel chassis and the S1 exception

The M5 alloy frame has 150mm of rear travel, a 29in front wheel and a 27.5in rear, with an adjustable head angle, bottom bracket and chainstay. SWAT storage in the downtube swallows a tube, multi-tool or snacks, which is useful when a backpack feels like overkill. S-Sizing runs from S1 to S6. Smaller sizes favour agility, while larger ones give more room and high-speed stability, so choose the size that matches how you like a trail bike to steer as well as your height.

S2 to S6 roll on a 160mm FOX 36 Rhythm GRIP fork and a FOX FLOAT X Performance shock with GENIE technology, which is meant to stay supple at the start of the stroke and firmer when you use more travel. S1 is different: a 150mm fork and a non-GENIE FOX FLOAT X Performance shock. Buy the small size on that kit, not on the S2-S6 headline.

Griffin Hales, writing for Electric Bike Report, found the mixed wheels and shorter chainstay setting helped the alloy bike feel lively through corners. The geometry is setup-sensitive, so try the chainstay and bottom-bracket positions rather than assuming the factory setting will suit the trails you ride.

Gears, brakes and tyres

Shifting is mechanical SRAM Eagle 90 T-Type, 12-speed with a 10-52t cassette, so you get a wide climbing range without another battery to charge. SRAM Maven Bronze four-piston brakes, a 220mm front rotor and a 200mm rear rotor are there to slow a full-power eMTB with authority.

The alloy rims are 30mm internally and tubeless-ready, wearing Butcher GRID GRAVITY T9 TLR tyres in 29x2.4in front and 27.5x2.4in rear, though they ship with inner tubes. An X-Fusion Manic dropper is fitted, with travel from 100mm on S1 up to 190mm on S5 and S6.

Lifting, charging and living with it

Claimed weight is 25.70 kg in S4 and can vary with size. On the move that mass is less of a problem than when you lift the bike onto a rack (load limits matter), carry it upstairs or load a lift. Regular carrying is the compromise to take seriously before you fall for the motor. Pedals are not listed, so you'll need a pair, and a tubeless conversion with valves and sealant is the obvious early upgrade if you want lower trail pressures and better puncture resistance.

Previous Turbo Levo Comp Alloy

The earlier Turbo Levo Comp Alloy from 2022 belonged to the generation before Levo 4 and used Specialized's Turbo Full Power 2.2 system. It was alloy too, but the motor, battery platform and chassis aren't the same as this G4 bike. Listings that omit the Levo 4 name are the ones to treat as a different machine.

Choose the Specialized Turbo Levo 4 Comp Alloy for Levo 4's motor, 840Wh battery and mixed-wheel handling in alloy, with FOX, Eagle 90 and Maven kit that suits fast trail and all-mountain riding. Be honest about S1's different suspension if you need the smallest size, and about whether you're happy lifting a 25.70 kg eMTB. Get those calls right and this is a full-power trail bike that can make long, hilly days feel realistic rather than grim.