Black Rock Bikes Keiki
The Black Rock Bikes Keiki is an electric bike with a 52V 17AH SAMSUNG pack, a 52V 750W rear geared motor - Bafang and a 20x4 Knobby Tire wheel.
Last updated: 9 November 2026
Motor and performance
- Controller
- 52V/28A Quick Connect
- Throttle
- Push Button
- Motor specification
- 52V 750W rear geared motor - Bafang
Row from the maker’s page: “Controller” | “52V/28A Quick Connect”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Throttle” | “Push Button”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Motor” | “52V 750W rear geared motor - Bafang”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Battery and charging
- Battery
- 52V 17AH SAMSUNG
Row from the maker’s page: “Battery” | “52V 17AH SAMSUNG”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Brakes and safety
- Brakes
- Jevelo XD-300
- Lighting
- Front and Rear LED with Brake Light
Row from the maker’s page: “Hydraulic Disc brakes” | “Jevelo XD-300”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Lights” | “Front and Rear LED with Brake Light”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Frame and components
- Derailleur
- Shimano ALTUS 7-Speed
- Shifter
- Shimano 7 Speed Trigger Shifter
- Saddle
- Extra Plush Cruiser Seat
- Seat post
- Promax Suspension
- Mudguards
- Front and Rear Installed
- Display
- ENA850C
- Rear rack
- Installed
- Wheel size
- 20x4 Knobby Tire
Row from the maker’s page: “Derailleur” | “Shimano ALTUS 7-Speed”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Shifter” | “Shimano 7 Speed Trigger Shifter”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Seat” | “Extra Plush Cruiser Seat”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Seat Post” | “Promax Suspension”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Fenders” | “Front and Rear Installed”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Display” | “ENA850C”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Rear Rack” | “Installed”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Row from the maker’s page: “Wheel” | “20x4 Knobby Tire”
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Sources
- Keiki - Step Thru Mini 20x4 - 52v Beach Cruiser Electric Bike – Black Rock Bikes USAArchived document
Source: blackrockbikesusa.com/products/step-thru-mini-20x4-52v-beach-cruiser-electric-bike
Retrieved October 23, 2026