Open Daily 8a-6p | 530-582-0909 | [email protected]
The Alpha Two Mk III is a lightweight, 16″ pedal bike built for budding riders ages 4 to 6. Crafted for paved streets and gentle dirt paths, it combines youth-focused geometry with thoughtful, adventure-ready features.
Mk III upgrades over Mk II:
Weighing just 12.1 lb, the Alpha Two Mk III is one of the lightest and most agile 16″ bikes available—ideal for confident exploration by pint-sized riders.
Geometry | 13.5lbs |
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Minimum Saddle Height
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15.5 in / 395 mm |
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Maximum Saddle Height
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25.2 in / 640 mm
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Gain Ratio
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3.765
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Recommended Inseam
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14" to 17"
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Wheel Diameter
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14 in
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Wheelbase |
26.77 in / 680 mm
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Chain Stay Length
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10.74 in / 273 mm
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Seat Tube Angle
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76°
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Head Angle
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66°
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Effective Top Tube Length
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13.0 in / 351 mm
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Bottom Bracket Height
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7.1 in / 182 mm
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Stack |
12.59 in / 320 mm
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Bottom Bracket Drop
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0.59 in / 15 mm
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Seat Tube Length
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6.3 in / 160 mm
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Standover
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14.2 in / 360 mm
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Q factor
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146mm
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Reach
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9.21 in / 234 mm
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Frame | THRU-TUBE™ Lightweight Triple Butted 6061 Aluminum. Low Center of Gravity, Kid Specific Geometry. Internally routed Cables. Adjustable Forged Dropouts. BALANCE-TEC Compatible. |
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Wheel Size | 16" |
Travel | |
Fork | Bladed Aluminum Legs with 1" Aluminum Steer tube |
Rear Shock | N/A |
Headset | 1" Integrated Threadless Sealed Cartridge |
Bottom Bracket | 68x113 Hollow Square Taper with Sealed Cartridge Bearings |
Shifter | N/A |
Rear Derailleur | N/A |
Cassette | 10t cassette |
Chain | |
Chainring | 18t |
Crankset | HEIR Lightweight Aluminum 3 piece. Narrow Width, 95mm length, 146mm Q factor |
Brakes | Forged Aluminum V-Brakes with Kid Sized Brake Levers |
Rotors | |
Seatpost | ⌀27.2mm alloy 1 piece |
Handlebar | Lightweight Aluminum 1 piece Bar/Stem Combo, 460mm wide, 50mm rise, 19mm grip diameter |
Stem | Prevelo 1pc bar/stem with knee friendly design |
Grips | 90mm Black Rubber, 19mm Small Hand |
Saddle | HEIR Frame Hugger™ Little Kid - Alloy Reinforced |
Pedals | Composite Little Kid, 9/16 SHORT Crmo Spindle |
Front Wheel | Lightweight Aluminum with Shaved Sidewalls w/ 74mm 16h Aluminum Sealed Cartridge with Allen Key Bolts |
Rear Wheel | Lightweight Aluminum with Shaved Sidewalls w/ 110mm 16h Aluminum Sealed Cartridge Cassette with hex key bolts |
Front Tire | Kenda Small Block Eight 16 x 1.5 |
Rear Tire | Kenda Small Block Eight 16 x 1.5 |
Sizes |
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