Reference

Rad Power Bikes RadMission 1: parts and specs

Replacement parts and specs for the RadMission 1: Kenda Kontact 27.5 x 1.95 tires and Rad's 27.5 tube, Tektro Aries mechanical brakes with 180 mm rotors, single speed 16T freewheel, 504 Wh battery, Safe Shield upgrade and Rad's charger.

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

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This page lists the common replacement parts for the Rad Power Bikes RadMission 1 single speed city bike, sold from 2021 to 2022. Specs are for the stock bike as sold; check your own bike before you buy.

Photo needed: A RadMission 1 from the side, showing the single speed drivetrain and downtube battery.. 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: Kenda Kontact 27.5" x 1.95" with a reflective sidewall, the stock RadMission 1 tire. Rad's Canadian store sells the Kenda Kontact 27.5" x 1.95" for $49 CAD, read Nov 9, 2026.
Inner tube: Rad's 27.5" x 1.9" to 2.0" inner tube lists the RadMission 1, rated 35 to 65 PSI and best at 50 to 60, $22, ships within 2 business days, read Nov 9, 2026.
Disc brake pads: Rad's Tektro E10.11 organic pads cover this model, $25 for one set (one wheel), back order, read Nov 9, 2026. Order two sets for front and rear.
Brake rotor: 180 mm.
Disc brake caliper: Tektro Aries mechanical.
Brake lever: Rad's brake lever is a Tektro mechanical lever covering this model, $25 each side, ships within 2 business days, read Nov 9, 2026. The levers have a motor cutoff built in.
Freewheel: single speed, 16 tooth.
Hub motor: 500W geared rear hub.
E-bike display: Rad LED display with assist levels 0 to 4. Rad's LCD Display Upgrade replaces the stock LED display on the RadMission; no price showed when read Nov 9, 2026.
Throttle: half grip twist throttle on the right.
E-bike charger: Rad's Rad Battery Charger (MY2025) fits all Rad bikes except the 2016 to 2017 RadMini 1 and the RadKick, $65, out of stock, read Nov 9, 2026.
E-bike battery: the RadMission 1 uses a 504 Wh battery designed for it; see Rad's battery resources. Rad's Safe Shield external battery is an upgrade for the RadMission 1, $599, out of stock, read Nov 9, 2026. Safe Shield batteries work only with the updated Rad charger.
E-bike connectors: check the display, motor, brake, throttle, pedal assist and light connectors.
E-bike lights: auto-on headlight and integrated taillight with brake light.

Tools for common jobs

Hex keys: brake caliper and lever bolts and general checks.
Tire levers and floor pump with gauge: changing the 27.5 tube and pumping to 50 to 60 PSI or your sidewall range.
Axle nut wrench: removing the rear hub motor wheel. The nut size isn't stated, so check yours.
Torque wrench: axle nuts and brake bolts to the values in your manual.
Cable cutters: trimming brake cables on the mechanical brakes, and zip ties when you check connectors.
Chain checker and chain lube: single speed chain care.

Where to buy

Rad's parts listings above. For a controller, display or motor, contact Rad support.
Independent sellers: our parts suppliers page. A local shop can order and fit parts: find a shop.

Common repairs

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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