Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Radio
2023 Radio Zuma 20 Bike
Previous used estimate
$295 - $304
Actual value depends on condition, size, and local demand.
Value Guide market data · 2023 Radio Zuma 20 Bike
12-month projected trend
12%
Direction and magnitude, not judgment
vs. category average
7%
Drops faster than category avg
Price over time - 2023 Radio Zuma 20 Bike
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
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Compare Zuma 20 Bike models
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Overview
About this bike
With a full range of sizes from 14” for the first-time rider, all the way through to a 26” wheeled machine for the aspiring rookie, there is a ZUMA for every rider. These carefully spec’d bikes feature a super lightweight alloy frame and fork with double wall rims and children specific aftermarket components from Promax, KMC, FSA, Vee Rubber and Satori, making them suit the rider’s size perfectly, but look, feel and ride just like a high-end full adult size MTB.
Specifications
- Subtype
- 20-inch
- Category
- Kids
- Component Fork
- Radio Zuma 20 straight rigid fork, 6061-T6 alloy
- Component Hubs
- Front: Radio disc hub, alloy shell, loose ball, QR crmo axle, 20h Rear: Radio Zuma disc cassette hub, alloy, sealed, QR, 20h
- Component Size
- 20-inch
- Component Stem
- Radio Zuma 45 frontload stem, alloy, 45mm reach
- Product Family
- Zuma
- Component Chain
- KMC chain, Z1 narrow type, 1/2" x 3/32"
- Component Color
- Black, Yellow
- Component Frame
- Radio Zuma 20 frame, 6061-T6 alloy
- Component Brakes
- Promax DSK-310 mechanical disc front & rear brake
- Component Pedals
- Radio JUNIOR pedals, nylon
- Component Saddle
- Radio Zuma 2024 railed seat
- Component Headset
- FSA A-headset, loose ball
- Component Crankset
- Radio Zuma 3pc crank, forged alloy, 145mm length
- Component Seatpost
- Promax SP-2019 seat post, alloy, multi-adjust, 300mm
- Component Handlebar
- Radio Zuma 20 bar, 6061-T6 alloy, 31.8mm bar bore, 1" rise
- Component Rear Tire
- Vee Tire Crown Gem, 2.25"
- Component Chainrings
- Radio sprocket, steel, 32t, narrow wide
- Component Front Tire
- Vee Tire Crown Gem, 2.25"
- Component Tape Grips
- Radio Zuma grips, 110mm, flangeless
- Component Brake Levers
- Promax BL-367 lever, alloy
- Component Bottom Bracket
- Radio BB set, BSA, square taper, sealed bearing
- Component Cassette Freewheel
- MICROSHIFT 12-28t, 7speed
- Hubs
- Front: Radio disc hub, alloy shell, loose ball, QR crmo axle, 20h Rear: Radio Zuma disc cassette hub, alloy, sealed, QR, 20h
- Crankset
- Radio Zuma 3pc crank, forged alloy, 145mm length
- Pedals
- Radio JUNIOR pedals, nylon
- Bottom Bracket
- Radio BB set, BSA, square taper, sealed bearing
- Chain
- KMC chain, Z1 narrow type, 1/2" x 3/32"
- Seatpost
- Promax SP-2019 seat post, alloy, multi-adjust, 300mm
- Saddle
- Radio Zuma 2024 railed seat
- Handlebar
- Radio Zuma 20 bar, 6061-T6 alloy, 31.8mm bar bore, 1" rise
- Headset
- FSA A-headset, loose ball
- Rear Tire
- Vee Tire Crown Gem, 2.25"
- Stem
- Radio Zuma 45 frontload stem, alloy, 45mm reach
- Brake Levers
- Promax BL-367 lever, alloy
- Brakes
- Promax DSK-310 mechanical disc front & rear brake
- Chainrings
- Radio sprocket, steel, 32t, narrow wide
- Fork
- Radio Zuma 20 straight rigid fork, 6061-T6 alloy
- Frame
- Radio Zuma 20 frame, 6061-T6 alloy
- Tape/Grips
- Radio Zuma grips, 110mm, flangeless
- Color
- Yellow
- Size
- 20-inch
- Cassette/Freewheel
- MICROSHIFT 12-28t, 7speed
- Front Tire
- Vee Tire Crown Gem, 2.25"
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.