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The "Hydric 5.9 Hardtail" model from KAYZA, released in 2023, is a versatile e-mountain bike which, at a price of 3299 EUR, represents an attractive option for cyclists who value quality and performance. The bike’s frame is made from robust 6061 aluminium and is designed as a hardtail with a frame height of 46 cm. With a maximum load capacity of 130 kg, the bike provides a solid foundation for a wide range of uses.
Fitted with ALHONGA “HT472” brakes and brake levers, each featuring a two-finger operation, the bike ensures reliable braking performance. Braking power is supported by 180 mm brake discs at both the front and rear. The drivetrain consists of a 9-speed SHIMANO “Acera” system, controlled by SHIMANO “Alivio” shifters, enabling precise and smooth gear changes.
The RST “Blaze-ML-29” fork, with 120 mm of travel, offers comfort and control on uneven terrain. Power is provided by a 4th-generation BOSCH “Performance CX” mid-drive motor with an output of 250 W and a voltage of 36 V. The motor is powered by a BOSCH “PowerPack 545” battery with a capacity of 545 Wh, which can be charged using a Bosch 4 A charger. The BOSCH “Purion” display allows you to select from four assistance levels and offers a push-assist function.
Further features include the CONTEC “Moab” handlebars with a diameter of 31.8 mm and a width of 740 mm, as well as CONTEC “MTB Straight Long” grips. The rims are KAYZA hollow-section “X18” disc rims, fitted with MAXXIS “Rekon” tyres in size 29x2.4. The hubs are from FORMULA, with the front hub being the “DC-20” model and the rear hub the “EHL-148S” model.
The SR “Vivo Sport Ergo” saddle in black and the CONTEC “Pillar” seatpost, with a diameter of 31.6 mm and a length of 400 mm, provide comfort on longer rides. A transparent chain guard from BLASE and the CONTEC “Powerlock” battery-powered lock round off the specification to ensure safety and security. Overall, the Hydric 5.9 hardtail offers a balanced combination of performance, comfort and safety for the discerning cyclist.
| Front brakes | ALHONGA "HT472", 2-finger, black |
| Brakes | ALHONGA "HT472", 2-finger, black |
| Front brake disc | ALHONGA "DRX1806", 180 mm |
| Rear brake disc | ALHONGA "DRX1806", 180 mm |
| Brake levers | ALHONGA "HT472", 2-finger, black |
| Frame | KAYZA Bosch, 6061 aluminium hardtail, 46 cm |
| Drivetrain | 9-speed SHIMANO "Acera" |
| Shift levers | SHIMANO "Alivio" |
| Number of gears | 9 |
| Fork | RST "Blaze-ML-29", 120 mm, tapered, matt black |
| Fork travel (mm) | 120 |
| Bottom bracket | BOSCH |
| Crankset | MIRANDA 172.5 |
| Sprocket | MIRANDA SHIMANO "Alivio" |
| Drive | SHIMANO "CN-LG-500" |
| Headset | VP "J313AE", tapered, 1 1/8-1.5", black |
| Handlebar | CONTEC "Moab" Ø 31.8 mm, 740 mm, black |
| Grips | CONTEC "MTB Straight long" |
| Stem | CONTEC "Forge" Ø 31.8 mm, 70 mm, black |
| Saddle | SR "Vivo Sport Ergo", black |
| Seatpost | CONTEC "Pillar" Ø 31.6 mm, 400 mm, black |
| Rims | KAYZA "X18" hollow-chamber disc |
| Tires | MAXXIS "Rekon", 29x2.4 |
| Front tire | MAXXIS "Rekon", 29x2.4 |
| Rear tire | MAXXIS "Rekon", 29x2.4 |
| Front hub | FORMULA "DC-20", 32-hole, black |
| Rear hub | FORMULA "EHL-148S", 32-hole, black |
| Spokes | Stainless steel, black |
| Pedals | VP "VPE-506", black |
| Motor manufacturer / model | BOSCH Gen. 4 "Performance CX" mid-drive motor, 36 V, 250 W |
| Display | BOSCH "Purion", 4-stage, push assistance |
| Battery | BOSCH "PowerPack 545", lithium-ion with BMS, 545 Wh |
| Battery capacity (Wh) | 545 |
| Charger | Bosch 4 A (230 V) |