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The 20" Alpha Three is Prevelos smallest geared bike. The 8-speed Shimano drive train and 11-34T wide range gearing is the real deal and gives growing riders truly usable gear range.
MEASUREMENT
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SPECIFICATION
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Weight (including pedals)
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18.9 lbs / 8.6 kg
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Minimum Saddle Height
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20.7 in / 525 mm
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Maximum Saddle Height
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25.5 in / 648 mm
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Bottom Bracket Height
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8.1 in / 205 mm
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Gain Ratio
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2.2 - 6.7
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MEASUREMENT | SPECIFICATION |
A Wheel Size | 20" |
B Wheelbase | 32.9 in / 835 mm |
C Effective Top Tube Length | 17.4 in / 443 mm |
D Head Angle | 69° |
E Seat Tube Angle | 71.5° |
F Chain Stay Length | 13.8 in / 350 mm |
COMPONENT | SPECIFICATION |
FRAME | 6061 heat treated aluminum alloy custom formed tubing |
FORK | Aluminum alloy blades with chromoly steerer tube - 35mm rake |
SEAT CLAMP | Aluminum alloy with toolless adjustment |
FRONT BRAKE | Tektro aluminum alloy V-brake |
REAR BRAKE | Tektro aluminum alloy V-brake |
FRONT BRAKE LEVER | Tektro aluminum alloy |
REAR BRAKE LEVER | Tektro aluminum alloy |
REAR DERAILLEUR | 8-speed Shimano Altus double servo with Smart cage |
SHIFTER REAR | Shimano Acera RAPIDFIRE Plus |
FREEWHEEL/CASSETTE | Shimano 11-34T |
CRANK SET | Prevelo anodized alloy 3-piece square taper with 110MM crank length. |
SPROCKET | 32T with double chain ring guard |
BB SET | Sealed cartridge |
HEAD SET | 1 1/8" threadless |
RIM | Aluminum with grinded sidewalls |
FRONT HUB | Lightweight alloy 1-piece forged CNC with quick release |
REAR HUB | Lightweight alloy 1-piece forged CNC with quick release |
TIRE & TUBE | Kenda Small Block Eight Pro 20 ×1.5 |
SADDLE | Prevelo big kid saddle |
HANDLEBAR | Prevelo aluminum big bore - 580mm width x 40mm rise with 31.8mm to 22mm taper |
HANDLEBAR STEM | Aluminum 35mm extension |
GRIP | Kraton rubber |
PEDAL | Composite with 9/16 chromoly axle |
We got this handy guide.
Prevelo Size Guide"We have put some serious miles on this little ripper of a bike and can honestly say from dirt trails in the bike park to neighborhood jaunts, this balance bike is a podium finish."
- The Bike Dads
"The Prevelo Alpha series is an exceptional line of bikes for eager young riders. Lightweight with a low-center-of-gravity, the Alphas are fun and easy to ride."
- Two Wheeling Tots
"From the tiny saddle to the custom 85mm-long cranks, everything on the Alpha One has been thought-through with the dedication and passion I normally see reserved for bikes costing thousands more."
- Red Kite Prayer
Ask any questions you have and we will get back to you ASAP.
We also have a size guide with plenty of information about sizing.