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The "Robert/a Pro I-R8" model from Hercules, launched in 2022, is a high-quality trekking and city e-bike that impresses with its robust construction and modern features. The frame is made of aluminium (AL 6061) and is specifically designed to accommodate the Bosch Powertube battery. With a maximum permissible weight of 150 kg and a kerb weight of 28 kg, the bike provides a solid foundation for both rider and luggage.
The Shimano hydraulic disc brakes (MT200), combined with the Shimano BL-MT201 brake levers and the 180 mm Shimano SM-RT10 front brake disc, ensure reliable braking performance. The drive system is the low-maintenance Gates CDX system, operated via a Shimano Revoshifter gear lever. The motor, a third-generation Bosch Active Plus, delivers 250 watts of power and 50 Nm of torque, whilst the 625 Wh Bosch Powertube battery ensures long-lasting assistance.
The SR Suntour NCX-D fork, with 63 mm of travel and air suspension, offers comfort on uneven terrain. The spec is rounded off by high-quality components such as the Selle Bassano Suprema City saddle, the Limotec suspension dropper post with 80 mm of travel and 40 mm of suspension travel, and the Ergon GC-1 grips. The Zecure AL handlebars with a 35° backsweep and the adjustable Zecure UP2+ stem ensure a comfortable riding position.
For safety and visibility on the road, the bike is fitted with a HERCULES FH 100 LED front light providing up to 100 lux and a Comus ICR-11 rear light integrated into the frame. The Schwalbe Marathon E-Plus tyres with SmartGuard technology offer excellent puncture protection and durability.
Other practical features include the i-Rack System R8 luggage rack with spring-loaded flap, Curana Apollo 60 mudguards, a Pletscher Comp Flex 40 kickstand and an ABUS Pro Shield 5850 lock. The price for this versatile and well-equipped e-bike is 4099 EUR.
| Brakes | hydraulic disc brake, Shimano MT200 |
| Brake levers | Shimano BL-MT201 |
| Frame | Aluminium Trekking City, Powertube, tapered, AL 6061 |
| Shift levers | Shimano Revoshifter |
| Fork | SR Suntour NCX-D, 63 mm travel, air suspension, lockout, 15 mm thru-axle |
| Fork travel (mm) | 63 |
| Crankset | Samox EC38 |
| Sprocket | Gates CDX 22T |
| Drive | Gates CDX |
| Headset | semi-integrated |
| Handlebar | Zecure AL, 31.8, 640 mm, 35° backsweep |
| Grips | Ergon GC-1 |
| Stem | Zecure UP2+, A-head, adjustable, 90 mm |
| Saddle | Selle Bassano Suprema City |
| Seatpost | Limotec, A3 suspension dropper post, 80 mm stroke, 40 mm travel |
| Seat clamp | QR, black |
| Rims | Rodi WEB 19 |
| Tires | Schwalbe Marathon E-Plus, 50-622, SmartGuard, Performance |
| Spokes | Stainless steel, black, 2 mm |
| Pedals | Marwi SP828, AL |
| Front light | HERCULES, FH 100, LED, up to 100 lux |
| Rear light | Comus ICR-11, integrated into the frame |
| Mudguards | Curana Apollo 60, AL |
| Kickstand | Pletscher Comp Flex 40 |
| Rack | i-Rack, R8 system bracket, with spring-loaded flap |
| Motor manufacturer / model | Active Plus, GEN3, 250 watts, 50 Nm |
| Display | Bosch Intuvia |
| Battery | Bosch Powertube |
| Battery capacity (Wh) | 625 |
| Charger | Bosch 2A |