Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Woom
2025 Woom OFF 4
Previous used estimate
$669 - $688
Actual value depends on condition, size, and local demand.
Value Guide market data · 2025 Woom OFF 4
12-month projected trend
21%
Direction and magnitude, not judgment
vs. category average
3%
Holds value better than category avg
Price over time - 2025 Woom OFF 4
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All OFF model years
Compare OFF 4 models
1 modelsChoose a different build or frame style to see its value.
Overview
About this bike
The new 20" woom OFF 4 provides off-road capability in a lightweight package with ergonomics that are designed specifically for children. NOTE: You won't be able to upgrade the woom OFF to an air suspension fork later on. If you think your rider would benefit from suspension, consider the OFF AIR. Better OFF Take your young Rider beyond the beginning stages of their mountain biking journey with the new 20” woom OFF 4! Stable, responsive, and equipped with high-performance components and tubeless-compatible rims and tires, it provides best-in-class value in its category. The woom OFF 4 is happiest venturing down a gravel path, up a dirt mountain road, or on the MTB trail, but will hold its own on any urban playground or paved path. Off-road capable, kid-tested, and ergonomically designed for growing bodies!
Specifications
- Subtype
- 20-inch
- Category
- Kids
- Component Fork
- Light carbon fork 1 – 1 1/8" tapered steerer tube 100 x 15 mm thru axle Post mount for disc brake
- Component Size
- 20-inch
- Component Stem
- Forged aluminum CNC-machined Handlebars attached via two clamps Rise/drop: +/-15° with flip-flop design to adjust the handlebar height Length: 50 mm
- Product Family
- OFF
- Component Color
- Terra Coppa, Black
- Component Frame
- Frame material: lightweight, high-quality 6061-T6 aluminum with butted and hydroformed tubes 20" wheels Easy-access low top tube to assist dismounting Long wheelbase and low center of gravity to aid balancing Featuring woom-specific molded chainstay protector
- Component Brakes
- Hydraulic disc brakes by Promax Rotor diameter front/back: 140/140 mm Ergonomic brake levers designed for a child’s hands
- Component Saddle
- Ergonomically designed to fit a child’s anatomy Streamlined, mountain-bike-specific saddle design Side protection to lean against walls
- Component Headset
- Fully integrated 1 – 1 1/8" headset Sealed industrial bearings
- Component Crankset
- Lightweight, forged aluminum, 4.3" (110 mm), kid-specific cranks with narrow tread (Q-factor) Narrow-wide chainring with 28 teeth in the front Cassette with 11-32 teeth in the back Flat pedals made from fiber-reinforced nylon Chromoly axle and sealed, industrial ball bearings
- Component Seatpost
- 27.2 x 250 mm Anodized aluminum seatpost with insertion marks that indicate the minimum insertion depth Quick-release seatpost clamp
- Component Shifters
- 9 speeds SRAM X5 trigger shifter SRAM X5 rear derailleur
- Component Handlebar
- Wide, ergonomically adapted and lightweight aluminum bars for more control Tapered end to fit a child’s hand Sandblasted and silver anodized Width: 570 mm Rise: 20 mm
- Component Rear Tire
- 20 x 2.25" Schwalbe Rocket Ron with ADDIX SPEED rubber compound Quality mountain bike tires with low rolling resistance, maximum grip, good shock absorption, and excellent durability Presta valves, tubeless conversion ready
- Component Wheel Set
- Tubeless-compatible Alexrims wheelset Aluminum hubs with sealed industrial bearings Thru axles for maximum torsional strength (100 x 15 mm front and 135 x 12 mm rear) 20 G14 spokes, double-crossed spoking Aluminum nipples
- Component Front Tire
- 20 x 2.25" Schwalbe Rocket Ron with ADDIX SPEED rubber compound Quality mountain bike tires with low rolling resistance, maximum grip, good shock absorption, and excellent durability Presta valves, tubeless conversion ready
- Component Tape Grips
- Child-friendly because of a small diameter Single-clamp grip to prevent twisting Safety zone: extra rubber on the palm-facing portion of the grip for added comfort 100% silicone for maximum grip
- Component Accessories Extras
- Enclosed tools: 4 mm hex key for the stem and seatpost clamp 8 mm hex key for the front wheel and pedals
- Crankset
- Lightweight, forged aluminum, 4.3" (110 mm), kid-specific cranks with narrow tread (Q-factor) Narrow-wide chainring with 28 teeth in the front Cassette with 11-32 teeth in the back Flat pedals made from fiber-reinforced nylon Chromoly axle and sealed, industrial ball bearings
- Seatpost
- 27.2 x 250 mm Anodized aluminum seatpost with insertion marks that indicate the minimum insertion depth Quick-release seatpost clamp
- Saddle
- Ergonomically designed to fit a child’s anatomy Streamlined, mountain-bike-specific saddle design Side protection to lean against walls
- Handlebar
- Wide, ergonomically adapted and lightweight aluminum bars for more control Tapered end to fit a child’s hand Sandblasted and silver anodized Width: 570 mm Rise: 20 mm
- Headset
- Fully integrated 1 – 1 1/8" headset Sealed industrial bearings
- Rear Tire
- 20 x 2.25" Schwalbe Rocket Ron with ADDIX SPEED rubber compound Quality mountain bike tires with low rolling resistance, maximum grip, good shock absorption, and excellent durability Presta valves, tubeless conversion ready
- Stem
- Forged aluminum CNC-machined Handlebars attached via two clamps Rise/drop: +/-15° with flip-flop design to adjust the handlebar height Length: 50 mm
- Accessories & Extras
- Enclosed tools: 4 mm hex key for the stem and seatpost clamp 8 mm hex key for the front wheel and pedals
- Brakes
- Hydraulic disc brakes by Promax Rotor diameter front/back: 140/140 mm Ergonomic brake levers designed for a child’s hands
- Fork
- Light carbon fork 1 – 1 1/8" tapered steerer tube 100 x 15 mm thru axle Post mount for disc brake
- Frame
- Frame material: lightweight, high-quality 6061-T6 aluminum with butted and hydroformed tubes 20" wheels Easy-access low top tube to assist dismounting Long wheelbase and low center of gravity to aid balancing Featuring woom-specific molded chainstay protector
- Shifters
- 9 speeds SRAM X5 trigger shifter SRAM X5 rear derailleur
- Tape/Grips
- Child-friendly because of a small diameter Single-clamp grip to prevent twisting Safety zone: extra rubber on the palm-facing portion of the grip for added comfort 100% silicone for maximum grip
- Color
- Black
- Size
- 20-inch
- Wheel Set
- Tubeless-compatible Alexrims wheelset Aluminum hubs with sealed industrial bearings Thru axles for maximum torsional strength (100 x 15 mm front and 135 x 12 mm rear) 20 G14 spokes, double-crossed spoking Aluminum nipples
- Front Tire
- 20 x 2.25" Schwalbe Rocket Ron with ADDIX SPEED rubber compound Quality mountain bike tires with low rolling resistance, maximum grip, good shock absorption, and excellent durability Presta valves, tubeless conversion ready
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.