Alpha Four
Category: Bike
The Alpha Four Mk III is a versatile, 24″ geared bike crafted for confident riders ages 7 to 11. Designed to handle paved routes, paths, and light trails, it blends trail-ready performance with youth-friendly ergonomics.
Key features:
- 8‑speed Microshift Acolyte drivetrain with wide 11–38 T cassette and clutched derailleur
- Promax hydraulic disc brakes for smooth, consistent stopping
- Tubeless-ready double‑wall 24″ rims paired with Kenda Small Block Eight tires
- Rider Supply Pod mounts for easy access to snacks and tools
- Kid‑optimized HEIR crankset and narrow Q‑factor for efficient pedaling
Mk III upgrades over Mk II:
- Hydraulic disc brakes
- Clutched Microshift derailleur for better chain security on rough terrain
- Tubeless capable double wall rims
- Rider Supply pod mounts for strap-free gear carrying
At just ~19.2 lb, the Alpha Four Mk III delivers nimble agility, climbing ability, and range—without outgrowing your kid any time soon.
Before you pay
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When it ships
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
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Standard Shipping · United States: $0.00
Express Shipping · United States: $3.99
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.
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