Velopedia Bicycle Archive
2026 Transition PBJ 24 Frame
Mountain bicycle from the Velopedia specification archive.
- Original MSRP
- $649.00
- Sizes
- Youth
- Colors
- Acid Bath, Obsidian
- Weight
- 4.8 lbs / 2.18 kg (One Size)
- Geometry
- 1 manufacturer size · Ride analysis
- Archive ID
- 900000708
Current market
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Velopedia analysis
What the specifications mean
The archive does not identify the brake system, so its controls, actuation method, pads and braking surfaces need to be checked directly. On the alloy frame, dents and hairline cracks around welds, pivots and heavily loaded junctions matter more than cosmetic scratches. The published 4.8 lbs / 2.18 kg (One Size) weight is a reference for the documented build; frame size, pedals, tire setup and production substitutions can change an actual scale reading.
Brake inspection
Type not specified
Identify the installed system before choosing parts, cables, hoses or service procedures.
Frame material
Aluminum / alloy
Dents and cracking around welds, pivots and loaded junctions deserve attention.
Published weight
4.8 lbs / 2.18 kg (One Size)
Frame size, pedals, tire setup and production substitutions can change the measured result.
Original MSRP
$649.00
Historical launch-position context—not a current valuation or asking price.
Understand MSRP and market evidence →
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
- BrakesIdentify the installed brake system before riding or ordering parts. Test every installed brake separately at walking speed, confirm it stops firmly and releases cleanly, then inspect its pads, braking surfaces and complete cable or hose path.Inspect the brakes →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Used-bike inspection checklist 18 universal checks for a record with limited component data Open checklistClose checklist
The archived record does not contain enough component detail for a fully specification-informed checklist. Use these universal checks on the bicycle in front of you, identify the installed equipment and confirm compatibility before ordering parts.
Identity and fit
Follow the full used-bike inspection order →Archived: 2026 Transition PBJ 24 Frame · Mountain · Published sizes: Youth
Frame and fork
Inspect the frame and fork →Archived: Frame: PBJ Youth Alloy
Brakes
Inspect the brakes →Controls and contact points
Wheels and tires
Check wheels and tires →Drivetrain
Check drivetrain wear →Before and during the test ride
Follow the full used-bike inspection order →Interpretation based on the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Frameset
| Frame Construction | PBJ Youth Alloy |
|---|---|
| Frame Material | Aluminum |
Wheels & Tires
| Wheel Size | 24" |
|---|
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | Youth |
|---|---|
| Seat tube | 280 mm |
| Effective top tube | 556 mm |
| Head tube | 115 mm |
| Head-tube angle | 69° |
| Chainstay / rear center | 357 - 375 |
| Wheelbase | 958 - 976 |
| Bottom-bracket drop | 15 mm |
| Reach | 360 mm |
| Stack | 538 mm |
Geometry source: Transition first-party SBG geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry interpretation
What this geometry means
The archived table contains multiple manufacturer geometry states. Velopedia preserves source order and analyzes each state separately rather than averaging the published values.
Youth geometry
Configuration
Riding position
The 538 mm stack is tall relative to the 360 mm reach, pointing to a more upright front-end position rather than an especially long, low cockpit.
Handling tendencies
A 69° head angle combined with a 958 mm wheelbase points to quicker-steering and more responsive steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes. A 357 mm rear center is compact, which tends to make rear-wheel weight shifts and tight direction changes easier than a long-rear-center layout.
Configuration changes
Compared with Configuration 2, this configuration shortens the rear center by 18 mm and shortens the wheelbase by 18 mm.
Riding position
The 538 mm stack is tall relative to the 360 mm reach, pointing to a more upright front-end position rather than an especially long, low cockpit.
Handling tendencies
A 69° head angle combined with a 976 mm wheelbase points to quicker-steering and more responsive steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes. A 375 mm rear center is compact, which tends to make rear-wheel weight shifts and tight direction changes easier than a long-rear-center layout.
Configuration changes
Compared with Configuration 1, this configuration lengthens the rear center by 18 mm and lengthens the wheelbase by 18 mm.
Geometry describes frame proportions and likely tendencies, not a ride test. Rider proportions, cockpit setup, tires, suspension settings, wheel configuration, and component choices can materially change how a bicycle fits and feels.
Gallery
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.