4130 CHROMOLY AND MID-SCHOOL

Used & Mid-School BMX Parts

Quality 4130 hardgoods and mid-school components. Cleaned, inspected, and ready to ride today.

eBay seller bmx-parts-depot USPS & UPS with tracking Every part rider-inspected

The Inventory

What We Stock

Hardgoods and components pulled from complete bikes, parts bins, and collections. Listings rotate constantly, so the eBay store is the live source.

Frames

4130 chromoly, mid-school geometry, honest condition notes.

Forks

Straight-leg and offset, threaded and threadless.

Bars & Stems

2-piece, 4-piece, front load, top load.

Cranks

3-piece chromoly sets, spindles, bottom brackets.

Wheels & Hubs

Built wheelsets, loose hubs, rims, cassettes and freecoasters.

Sprockets

Guard sprockets, spline drive, bolt drive, chainrings.

Seats & Posts

Pivotal, railed, combos, tripod and standard posts.

Pedals & Pegs

Plastic and alloy platforms, chromoly and alloy pegs.

Why Buy Here

No Surprises
In The Box

01 / SHIPPING

Fast Shipping

Shipped directly from Maryland via USPS and UPS with tracking. Packed properly so nothing shows up bent.

02 / QUALITY

Rider-Inspected

Every frame, wheel, and crankset is deep-cleaned and stress-tested before it gets listed. If something is cracked, bent, or sketchy, it does not get sold.

03 / SELECTION

Rare & Vintage Finds

Specializing in mid-school classics, 4130 chromoly, and aftermarket parts that are hard to track down anywhere else.

Our Process

Bin To Box

The same four steps for every part that leaves here, whether it is a ten dollar stem or a collector frame.

Sourced

Pulled from complete bikes, rider trades, and collections across the mid-Atlantic.

Cleaned

Degreased, scrubbed, and stripped of old grip residue and sticker gunk.

Inspected

Checked for cracks, bends, thread damage, and bearing play. Flaws get photographed, not hidden.

Shipped

Listed with honest condition notes, then boxed and out the door with tracking.

Free Reference

Not sure it fits? Check before you buy.

Ten guides and an A-Z dictionary covering the standards, dimensions, and part variations that decide whether a used BMX part fits your bike. Every figure carries its source, and the ones nobody can source are marked as such.

Open the Fitment Guide

Before You Buy

Common Questions

The three we get asked most. Ten more, with their sourcing, on the full FAQ.

What size BMX do I need for my height?

On freestyle the wheel is 20 inch whatever your height, and the size you pick is the top tube. Race sizes do map to height, but the published charts disagree by up to six inches on the same size name.

Chromoly or hi-ten, is it worth it?

Yes for anything you land on. Chromoly is about twice as strong for the same tube weight. It is rarely all or nothing though, and most bikes step up a piece at a time.

How much should a first bike cost?

Check the spec sheet rather than the price. At the same money one brand sells you an all hi-ten bike and another sells you a chromoly one.

Mess About

Two BMX Games

Built for no particular reason. The first one names every part on the bike, which is more useful than it sounds.

Part Requests

Looking For A
Specific Part?

Tell us the part, the era, and the size. If it is not in the store yet, there is a good chance it is in a bin waiting to be listed.

Most part requests get a reply within a day.