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The "Hydric 7.9 Hardtail" model from KAYZA, launched in 2023, is a high-performance e-bike fitted with a wide range of high-quality components. The frame is made from 6061 aluminium and is specifically designed to accommodate the Bosch motor, giving the bike a robust yet lightweight construction. With a frame height of 56 cm, it is ideal for riders seeking a stable and comfortable riding experience. The maximum permissible weight is 130 kg, ensuring a high load-bearing capacity.
The Hydric 7.9’s braking system comprises ALHONGA “HT472” components, which are used for both the brake levers and the front and rear brakes. The brake discs have a diameter of 180 mm and ensure reliable braking power in a variety of conditions. The drivetrain is a 10-speed SHIMANO “Deore”, which ensures precise and smooth gear changes. The SUNTOUR fork, with 120 mm of travel, offers additional comfort and damping on uneven terrain.
Other features include pedals from VP, a crankset from MIRANDA, and a chainring and drivetrain also from SHIMANO. The handlebars and stem are from CONTEC and, in combination with the CONTEC grips, offer comfortable handling. The rims are KAYZA hollow-wall “X18” with disc brake technology, whilst the MAXXIS “Rekon” tyres in size 29x2.4 ensure optimum grip.
Power is provided by a fourth-generation BOSCH “Performance CX” mid-drive motor, combined with a high-performance BOSCH “PowerPack 725” battery. This battery has a capacity of 725 Wh and is charged using a Bosch 4 A charger. The BOSCH “Intuvia 100” display allows for easy monitoring and control of the electric assistance.
The SR “Vivo Sport Ergo” saddle, together with the CONTEC seatpost, ensures a comfortable riding position. A transparent chain guard from BLASE and a CONTEC “Powerlock” battery lock round off the specification. Priced at 3799 EUR, the KAYZA Hydric 7.9 hardtail offers excellent value for money for anyone looking for a reliable and high-performance e-bike.
| 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 integrated, 6061 aluminium hardtail, 56 cm |
| Drivetrain | 10-speed SHIMANO "Deore" |
| Shift levers | SHIMANO "Deore" |
| Number of gears | 10 |
| Fork | SUNTOUR "SF19-XCR32-Boost-AIR-LOR-DS-15QLC32-110-29", tapered, matt black |
| Fork travel (mm) | 120 |
| Bottom bracket | BOSCH |
| Crankset | MIRANDA 172.5 |
| Sprocket | MIRANDA SHIMANO "Deore" |
| 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-511", 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 "Intuvia 100" |
| Battery | BOSCH "PowerPack 725", lithium-ion with BMS, 725 Wh |
| Battery capacity (Wh) | 725 |
| Charger | Bosch 4 A (230 V) |