E-Bike Parts & Components

How to choose E-Bike Parts & Components

The 19 parts here all come from one store, Eunorau (eunorau-ebike.com, a US store with prices in dollars), and cost $19 to $399 as checked on Oct 23, 2026: two lights, four trailer hitch parts, four FLASH body parts, two Bluetooth displays, three brake sets, a suspension seatpost, a single-speed conversion kit and two wheel sets. Compatibility comes first, because these parts are written for specific Eunorau bikes. Every page except the two lights names a bike line or a fit claim, but the detail varies: the FLASH parts say only 'for Flash', without naming the models or versions, and at least one page does not say whether its list covers every version or year. The two lights list compatible voltages (up to 60V on the front light) instead of bikes, and do not name the connector.

Brakes are the clearest comparison. The 2-Piston 2.0 set ($119, 180mm rotors) is described for e-bikes with 500W, 750W or 1000W and below, the 4-Piston set ($189, 203mm rotors) for high-output 750W and 1000W bikes, and the Tektro 4-piston set ($299, 203mm rotors) for 500W, 750W, 1000W or more; the first two list cargo, trike and JUMBO models as not compatible, and none gives stopping figures. The BC182 ($89) and BC281 ($99) displays list the UART protocol and exclude the URUS, G20-CARGO, E-FAT-MN, E-FAT-STEP and SPECTER S 3.0 / ST 2.0 (CAN protocol), with an unexplained '(except E8)' note, and the pages do not say how the two differ. The wheel sets (27.5 x 3 in, $299 and $399) ship Kenda or Chaoyang tires depending on warehouse stock, and exclude disc rotors.

Every review here comes from Eunorau, so these are its terms. Parts ship by FedEx or UPS in an estimated 5 to 9 days after 1 to 3 business days of processing; orders over $100 ship free and smaller ones pay $14.99, which 12 of these 19 parts would on their own. If the local warehouse is out of stock, the item ships from overseas in an estimated 10 to 15 business days, possibly without tracking until customs. A return must be applied for within 7 calendar days of receipt, for a new, unused item complete in its original packaging, and you pay the shipping back; the terms page says shipping is charged only once, which the return page contradicts. The warranty page covers original Eunorau parts for 24 months, manufacturing defects only, but excludes wear items and does not name these parts, so ask support whether it applies.

Before ordering a part that touches the drive or brakes, confirm the exact model and version with the store. Most pages give no weight, load rating or installation steps, and several describe their contents loosely: the FLASH Lampshade's description line reads 'EUNORAU Fender for Flash', the foot plates page does not say whether it sells pedals, plates or both, and the M12 thru-axle adapter lists two axle lengths without saying which belongs to which dropout width.

Guide updated October 25, 2026, from the reviews on this page and the store terms they cite.