Reference

Rad Power Bikes RadExpand 5: parts and specs

Replacement parts for the RadExpand 5 folding bike: 20 x 4 tires and Schrader tubes, Tektro pads and levers, LED display and LCD upgrade, charger, battery and lights, with prices.

Last edited Nov 9, 2026 by Pedalwise team Edit History Add a subpage

The Pedalwise team started this page from official manuals, support pages and repair videos. Fixed this yourself, or spotted something wrong? Help improve it.

Tools

Parts

This page lists the common replacement parts for the Rad Power Bikes RadExpand 5 folding bike (2022 to 2024), not the newer RadExpand 5 Plus. Specs are for the stock bike as sold; check your own bike before you buy. Rad's LCD display upgrade page and LED display guide cover this model's display.

Photo needed: The RadExpand 5 from the side, with the battery in place, and folded. For photos, ask Rad support or see the guides linked above.. Add one

Electrical parts on this list must match this exact model, and they are fitted at the external plugs or by a pro. Never open the battery, controller, motor or display. For battery and charger trouble, start with battery won't charge and e-bike battery care.

Parts list

Tire: 20" x 4". Rad's RadExpand replacement tire is a CST BFT 20" x 4" for the RadExpand 5 (2022 to 2024), $55, out of stock, read Nov 9, 2026. Rad's Kenda Krusade 20" x 4" also fits the RadExpand 5, $67.95, out of stock, read Nov 9, 2026.
Inner tube: Rad's 20" x 4" inner tube is Schrader and fits the RadExpand 5 (2022 to 2024), $22, read Nov 9, 2026.
Disc brake pads: Rad's Tektro E10.11 organic pads fit the RadExpand 5, $25, on back order, read Nov 9, 2026.
Brake lever: Rad's brake lever, a Tektro mechanical lever, fits the RadExpand 5, $25, read Nov 9, 2026.
E-bike display: LED display. The RadExpand can take Rad's LCD display instead: Rad's LCD Display Upgrade replaces the stock LED display on the RadExpand, $99, out of stock, read Nov 9, 2026. Rad's LED display guide and LCD upgrade guide cover the swap.
E-bike charger: Rad's Rad Battery Charger (MY2025), $65, out of stock, read Nov 9, 2026.
E-bike battery: external battery. Rad's Safe Shield Advanced External Battery (15 Ah) is an upgrade for the RadExpand 5, $599, out of stock, read Nov 9, 2026, and needs Rad's updated charger.
E-bike lights: Rad's RadExpand headlight fits the RadExpand 5, $45, and its RadExpand taillight fits the RadExpand, $27.50, both shown as shipping within 2 business days, read Nov 9, 2026. Separate lights are sold for the RadExpand 5 Plus, so pick the plain RadExpand ones.

Where to buy

Rad's own spare parts store: tires, tubes, brakes and lights. Many items showed as out of stock on Nov 9, 2026, so check back or ask Rad support.
For a part Rad doesn't list, such as a controller or motor, contact Rad support first, since the replacement comes from Rad.
Area 13 E-Bikes sells an aftermarket Rad kit, a 35A controller and LCD8H display sold together for $229, which fits only the cadence sensor version of the RadExpand 5. It showed as out of stock on Nov 9, 2026. It is not a Rad part, so ask Area 13 about fit, and keep the bike set up as its original class.
Independent sellers are listed on our parts suppliers page.
A local shop can order and fit parts: find a shop.

Common repairs

Videos

RadExpand 5 Assembly, Rad Power Bikes from Rad Power Bikes: Rad's assembly video for the RadExpand 5 folding bike, covering the stock parts and how they mount.

Sources

Stuck after these checks? Find a shop near you.

Need a pro?

If these steps didn't fix it, find a shop near you in our partner network. For battery or wiring trouble, look for shops marked Battery and electrical.

Talk

Questions, things that worked for you, or something that looks wrong on this page.

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