Reference

Ride1Up Portola (original): parts and specs

Replacement parts and specs for the original Ride1Up Portola folding bike: 20 x 3 tires, hydraulic brakes with 180 mm rotors, KMC 8-speed chain, 750 W geared hub, DMHC controller, KD21C display and 48V Reention Rhino battery, with Ride1Up's part pages.

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 original Ride1Up Portola folding bike, sold 2023 to 2024. Specs are for the stock bike as sold, read Nov 9, 2026; check your own bike before you buy. Full specs are on Ride1Up's Portola product page and in its tire and tube sizing article. The Portola 02 uses a different controller, display and sensor, so see the Portola 02 parts page for that bike.

Photo needed: The original Portola from the side with the KD21C display visible. For photos, see Ride1Up's Portola page 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 3" cross-country low tread, puncture resistant. Run 10 to 20 psi on the original Portola, and check your sidewall.
Inner tube: Schrader valve, sized to the 20" x 3" tire.
Brake rotor: 180 mm. A brake rotor is sold on the Portola replacement parts page, priced when you pick the option, read Nov 9, 2026.
Disc brake caliper: dual piston hydraulic with an electric cutoff sensor; the brand isn't published. The left front and right rear brakes are sold on the Portola replacement parts page, priced when you pick the option, read Nov 9, 2026.
Chain: KMC Professional 8-speed.
Freewheel: 11 to 32T, Shimano Altus RD-M310 derailleur, 48T chainring. The crankset, bottom bracket and derailleur hanger are sold on the Portola replacement parts page.
Hub motor: 48V 750 W geared hub, 65 Nm. The rear wheel and motor page has a Portola option, full wheel or stator only, from $150, read Nov 9, 2026.
E-bike controller: 48V 20A DMHC sine wave. Sold on the Portola replacement parts page, priced when you pick the option, read Nov 9, 2026.
E-bike display: KD21C 2.2" LCD. Sold on the Portola replacement parts page, priced when you pick the option, read Nov 9, 2026.
Throttle: left-hand thumb throttle. Sold on the Portola replacement parts page, priced when you pick the option, read Nov 9, 2026.
Pedal assist sensor: Ride1Up R1CBC cadence sensor. A cadence sensor is sold on the Portola replacement parts page, priced when you pick the option, read Nov 9, 2026.
Brake cutoff sensor: the brake sensor cable is sold on the Portola replacement parts page, priced when you pick the option, read Nov 9, 2026.
E-bike charger: 48V, 2A with an LED indicator. Ride1Up's charger page sells chargers at $70, read Nov 9, 2026; ask which option fits.
E-bike battery: 48V Reention Rhino, 10.4Ah (500 Wh) or 13.4Ah (643 Wh). The Portola Battery comes in 10Ah or 13Ah and fits the existing Portola, $255, down from $295, read Nov 9, 2026.
E-bike connectors: the main cable (1T4) and headlight cable are sold on the Portola replacement parts page, priced when you pick the option, read Nov 9, 2026.
E-bike lights: 100 lux front light and a 6V brake light. The headlight and taillight are sold on the Portola replacement parts page, priced when you pick the option, read Nov 9, 2026.
Grips: ergonomic rubber.
Pedals: Sunlite folding pedals.
Saddle: DDK City Comfort.

Tools for common jobs

Tire levers: getting the tire off for a flat.
Floor pump with gauge: filling the Schrader valve to 10 to 20 psi.
Tire pressure gauge: low pressure on small fat wheels needs an accurate gauge.
Axle nut wrench: removing the rear hub motor wheel.
Hex keys: stem, folding latch, seat clamp and caliper bolts.
Torque wrench: axle, stem and crank bolts to the values in your manual.
Chain checker: measuring chain wear.
Chain tool: fitting a new 8-speed chain.
Chain lube: regular chain care.
Brake pad spreader: keeping hydraulic pads apart with a wheel out.
Brake bleed kit: bleeding the hydraulic brakes; ask Ride1Up which fluid, since the brake maker isn't named.
Pedal wrench: removing the folding pedals.

Where to buy

Ride1Up's Portola replacement parts page, from $25, read Nov 9, 2026. Every Ride1Up part is in its parts listing.
Ride1Up's Portola Battery, rear wheel and motor page and charger page.
Independent sellers: parts suppliers.
A 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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