E-Bike Parts: chargers, batteries, controllers, brakes, tires and more

Replacement parts are where mistakes get expensive. Each category explains how to identify what you have (voltage, connector, size, mount) before you buy. If your bike is misbehaving and you are not sure which part is at fault, start with an E-Bike Assessment instead of guessing.

Popular:

Or describe what you need and we will narrow it down.Get an Assessment

2 products

All e-bike parts

Filter, then open a product for our notes and the Amazon listing.

E-Bike Battery ChargersFeatured

48V 2A E-Bike Charger, DC 5.5x2.1 Barrel Plug (generic)

This is the single most common replacement charger for 48V e-bikes: 54.6V output, 2 amps, a 5.5 mm x 2.1 mm DC barrel plug, and a fan-cooled brick that takes most of a night to fill a mid-size pack. Because the listings are generic, the product you are really buying is a spec sheet: 54.6V DC output (for 13-series lithium-ion packs), 2A, correct plug, and a red/green status light. Bring your old charger's label to the listing and match the output voltage and plug exactly; a 48V label on the box is not enough.

Best for: Replacing a lost or dead 48V charger with a barrel-plug battery · Keeping a second charger at work or in the garage · Budget bikes whose maker no longer sells the original

View details & where to buy

Sold on Amazon

ThrottlesFeatured

Thumb Throttle with 3-Pin Julet Waterproof Connector (generic)

Most modern kit bikes and a lot of budget production e-bikes use a hall-effect thumb throttle with a three-wire lead: power, ground and signal. When the throttle dies, a generic replacement with the same connector usually plugs straight in, which is why the 3-pin Julet (Higo-style) waterproof version is the best-selling type. Before buying, confirm that your throttle lead uses the small 3-pin waterproof round plug and note whether it is male or female; a photo of your old throttle next to the listing saves a return.

Best for: Replacing a dead thumb throttle on a Julet-connector kit · Riders who prefer a thumb paddle to a twist grip · Bikes running KT and similar controllers with waterproof harnesses

View details & where to buy

Sold on Amazon

Quick finders

Jump straight to what fits your bike

Find a charger by battery voltage

The charger must match the pack: 36V → 42.0V, 48V → 54.6V, 52V → 58.8V output.

36V (1)48V (2)52V (1)

Find a battery by voltage

Match voltage first, then mount style and connector.

36V (1)48V (1)52V (1)

Find a controller by voltage

Controllers and displays are usually paired — confirm the protocol.

36V (1)48V (2)

Find a tire by size

Size is printed on the sidewall (e.g. 20×4.0, 26×4.0, 27.5×2.4, 700×38c).

20x4 (1)26x4 (1)27.5 (1)700c (1)

Find a tube by size

Match the tire size and the valve type (Schrader vs Presta).

20x4 (1)26 (1)26x4 (1)700c (1)

Brake pads by brake type

Pad shape depends on the caliper model — check yours before ordering.

disc (3)

By connector / plug

XT60, Anderson, Julet/Higo, DC barrel, XLR…

julet (3)xlr-3-pin (2)dc-barrel-5.5x2.1 (1)dc-barrel (1)julet-3-pin (1)xt60 (1)anderson (1)

Browse

E-Bike Parts by category

Grouped the way a shop is organized. Each category page has buying notes, compatibility tips and its own filters.

Electrical10 categories

E-Bike Batteries

Replacement and spare lithium packs — match voltage, mount and connector.

E-Bike Battery Chargers

Replacement chargers — voltage, amperage and plug type must match your pack.

E-Bike Controllers

The brain between battery, motor, throttle and display.

E-Bike Displays

LCD/LED displays and replacement screens matched to your controller protocol.

E-Bike Motors

Replacement hub and mid-drive motors and conversion kits.

Hub Motors

Front and rear geared/direct-drive hub motors and wheel kits.

Mid-Drive Components

Chainrings, kits and service parts for mid-drive systems.

Wiring Harnesses

Main cables and extension harnesses for display, throttle and brake sensors.

Connectors & Plugs

XT60/XT90, Anderson, Julet/Higo waterproof connectors and battery discharge plugs.

Replacement Screens

Screens and protective covers for common display models.

Controls2 categories

Throttles

Thumb and twist throttles — connector and voltage signal must match.

Pedal Assist Sensors

Cadence and torque sensors that tell the controller you are pedaling.

Brakes4 categories

E-Bike Brake Pads

Disc pads in the right shape and compound for heavier, faster e-bikes.

Brake Rotors

160/180/203 mm rotors — check mount type (6-bolt vs Centerlock).

Brake Levers

Mechanical and hydraulic levers, including e-bike levers with motor cut-off sensors.

Hydraulic Brake Components

Calipers, hoses, olives, bleed kits and mineral oil / DOT fluid.

Wheels & Tires5 categories

E-Bike Tires

E-bike rated tires with puncture protection in the common 20×4, 26×4, 27.5 and 700c sizes.

Inner Tubes

Schrader/Presta tubes, thorn-resistant and sealant-filled options.

Tubeless Components

Sealant, valves, rim tape and plugs for tubeless setups.

Wheels & Rims

Replacement wheels and rims, including motor-compatible dropout widths.

Spokes & Nipples

Spokes sized for hub-motor flanges and heavy e-bike loads.

Drivetrain6 categories

Cassettes

7–12 speed cassettes; freehub standard must match your wheel.

Freewheels

Thread-on freewheels common on hub-motor e-bikes (often 7-speed).

E-Bike Chains

E-bike rated chains with stronger plates; match your speed count.

Derailleurs

Rear derailleurs, hangers and shifters for common e-bike drivetrains.

Cranksets

Cranks, chainrings and bottom brackets — including PAS-compatible options.

Pedals

Flat, wide-platform and folding pedals with grip for commuting.

Cockpit & Comfort8 categories

E-Bike Lights

Headlights and taillights — battery-powered or wired to the main pack.

Fenders

Full-coverage and fat-tire fenders sized to your wheel and tire width.

Racks (Parts)

Front and rear rack hardware for commuter and cargo setups.

Kickstands

Heavy-duty single and double-leg stands rated for e-bike weight.

Seats & Saddles

Wide comfort saddles, suspension seats and replacement covers.

Seat Posts

Suspension and rigid posts — check diameter (27.2, 30.9, 31.6 mm).

Handlebars & Stems

Riser, swept-back and adjustable stems for a more upright fit.

Grips

Ergonomic and lock-on grips for numb-hand relief.