Haibike SDURO HardNine 4.0

The “SDURO HardNine 4.0” model from the “Haibike” brand, released in 2020, is a versatile mountain bike suitable for both ambitious beginners and experienced riders. Priced at 2,499 EUR, it offers solid specifications and modern technology. The frame is made from 6061 aluminium and features a quick-release axle (5 x 135 mm) and a post-mount disc brake, ensuring robustness and durability. The maximum rider weight is 120 kg, making the bike suitable for heavier riders too.

The SDURO HardNine 4.0 is fitted with Shimano MT400 brakes, made from aluminium, with 180mm discs. The brake levers are also by Shimano (MT401) and made from aluminium, ensuring reliable braking performance. The drivetrain consists of a Shimano Deore M6000 20-speed system, operated via Rapidfire shifters. The front derailleur is also a Shimano Deore M6000, ensuring precise and fast gear changes.

The fork is a RockShox Recon TK with remote lockout, a steel spring and 100mm of travel. It features a 1 1/8" steel steerer tube and an 8 x 100mm threading, which provides good damping on uneven trails. The pedals are aluminium freeride pedals fitted with reflectors, which enhance safety when riding at dusk.

The cassette is a Shimano HG500 with 11–42 teeth, and the drivetrain is powered by a KMC e10S chain. The handlebars are Haibike Components TheBar+ with a width of 740 mm, and the grips have been specially developed for Haibike mountain bikes. The stem is a Haibike Components The Stem+, A-Head, and the headset is A-Head Tapered.

The rims are Rodi Black Rock 21, eyeleted, hollow-section aluminium rims, which, in combination with Schwalbe Smart Sam tyres (57-622), provide excellent traction and stability. The front hub is a Shimano MT400-B and the rear hub is a Shimano TX505-8; the spokes are Sapim Leader in black. The wheelset is 29 inches in size.

The saddle is a Haibike Components TheSaddle, and the seatpost is a Haibike Components The Seatpost +, Patent, with a diameter of 31.6mm and made from aluminium. The motor is a Yamaha PW-ST system with an output of 250W and a torque of 70Nm, providing assistance up to a speed of 25km/h. The battery is a Yamaha lithium-ion battery with a capacity of 500Wh, and the display is a Yamaha Side Switch.

Overall, the SDURO HardNine 4.0 offers a well-thought-out combination of performance, comfort and reliability, making it an attractive choice for mountain bike enthusiasts.