Rockrider Electric hybrid bike with central motor and low frame, E-ACTV 500 green

As the bicycle's manufacturer lists it

We've chosen to use the Acolyte derailleur because of its durability. 8 gears: reducing the drivetrain to just 8 gears means bigger – and therefore sturdier – cogs. "Single click" switch: avoids gear changes being too quick when the chain is subjected to stresses that could damage it. 12x42 cassette: we've opted for a cassette with 12 teeth, rather than 11, on the smallest cog. This makes the cassette last longer.

As the bicycle's manufacturer lists it

ROCKRIDER PROTECT+ all-terrain tyres offering excellent puncture protection (maximum level of 5/5). Dimensions: 700x47 mm (ETRTO 47-622) Puncture protection level: 5/5 Type of protection: 3 mm high-density rubber + polyamide band dual protection Reflective strips: yes Carcass: 60 TPI Weight: 1010 g Tubeless compatible: No

As the bicycle's manufacturer lists it

Rockrider Trekking long ride saddle. We conducted morphological studies aiming to understand where the pressure points are on different body types. We designed the size of the saddle and selected the foam so as to better distribute these pressure points. The saddle was then tested in real use and updated based on feedback from our testers.

As the bicycle's manufacturer lists it

with bell