Profile’s Tech Tip #18: Profile Mini Rear 3/8 Hub Assembly

The Profile Mini Rear Hub has become an industry staple over the past 16 years. In celebration of it’s 16 birthday, let’s crack into the internal assembly. Although we recommend you using a press, you can also follow the step-by-step tutorial here, using some common wrenches: Profile 3/8 Mini Cassette […]

May 5, 2017

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Gear Inch Chart

Gear Inches are used to give a numberical value to how a particular chainwheel/cog combination will feel. Classic BMX gearing evolved over the years to be 44/16,which has 55 gear inches. The most popular gear ratios are pretty close to a 55 inch, which just seems to feel best for […]

January 20, 2012

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Hub Measurements

Using these measurements, in addition to the ERD (Effective Rim Diameter) of the rim you intend to use, you can calculate, using the online spoke calculator from United Bicycle Institute (link), what length spoke you’ll need.   Hub Style Center to Drive Flange Center to Non-Drive Flange Drive Flange Diameter […]

May 26, 2011

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We are taking precautions to protect our employees and follow CDC and state guidelines. In the meantime, our machine shop is still running, we're here to assist you and we'll be shipping product to help support bike shops during this difficult time.