US Dollars
Airkewld PRO Guide · #AirkewldArmy
DIY vs. PRObuilt vs. ECObuilt Drop Spindles
Three ways to drop the front of your Classic Volkswagen 2 1/2″ — and three very different experiences. This guide is built for the #AirkewldArmy to make a confident, well-informed call for YOU and YOUR build. Let’s get into it.
PRObuilt Philosophy
Spindles are a safety part. We don’t guess, we don’t hope, and we don’t skip QC. Every spindle that wears the PRObuilt name has been pressed apart, inspected, reamed to OE spec, and signed off by an Airkewld PRO before it ships. That’s the difference.
The Three Options
- UN-assembled Drop Spindles — raw components, you press & ream
- PRO PickPRObuilt Drop Spindles — PRO-assembled, QC’d, ready to install
- ECObuilt Drop Spindles — PRO-assembled at a value-driven price point
The Basics — Fitment & Specs
What fits, how much drop, and what changes geometrically.
| Year & Model Fitment | 1949–1965 Beetle & Karmann Ghia |
| Porsche 356 A & B | Yes — some models require a new inner wheel bearing and seal |
| Drop Amount | 2 1/2″ (63.5mm) |
| Track Width Added | 3/8″ (9.5mm) — every link pin drum drop spindle adds this, regardless of what other vendors print |
PRObuilt vs. UN-assembled — The PRO Take
Why the assembly path matters more than most builders realize.
Why pay for PRObuilt over UN-assembled?
One word: ease. UN-assembled spindles require a long list of tools to press apart, check thrust, ream to OE specs, and press them back together. It takes expertise, precision, and skill. Many try. Few get it right.
What’s the install-time difference?
PRObuilt: roughly one hour with average mechanical skills. UN-assembled: a weekend or more, depending on king pin, bushing, carrier, and link pin condition — plus the tools you need, the trial-and-error you’ll endure, and the wait time for parts when you find a problem mid-build.
Lots of vendors sell similar UN-assembled spindles. Why Airkewld?
QC. Quality Control. Companies say they do it — most don’t. We inspect every set of spindles that comes through our door to eliminate the down-time the #AirkewldArmy has to endure when finishing a project. If the PROs sign off on the spindle, the carrier, the king pin, the fit, the feel, and the finish — that’s your guarantee of the BEST user experience. After that, it’s up to you.
Can you guarantee the spindles on your VW today are safe for you and your family?
If you can, perfect. If you can’t, the PROs at Airkewld will give you that confidence — provided you install them correctly.
Raw steel finish or powder coated?
Most spindles ship raw, so you’ll need to finish them to match the rest of your drivetrain (the OCD team here always does). If you want to sign off on this part of your suspension lasting forever, the powder-coated route is the move.
Build Variables to Consider
Where the standard 2 1/2″ drop fits, where it doesn’t, and what to do about it.
What if I want less than 2 1/2″ of drop?
Dialing in a precise drop is doable but not simple. Your VW is sitting on original torsion springs that have sagged or lost tension over the decades, so any math you try to do today is fighting that variable.
The PRO move: install fresh torsion leaves first to bring the car back up to a known starting point, then decide how much you want to drop it. If 2 1/2″ lands where you want, the PRObuilt Drop Spindles bolt right in. Need more drop or finer control? Step up to a set of PRObuilt Adjusters (if you have fab skills) or a full Ultimate Beam (if you don’t).
My king pins and link pins are sloppy. Will PRObuilt Drop Spindles fix that?
Yes. Every PRObuilt set ships with FEBI (German) king pins and link pins, plus new bushings. We install the bushings and ream them with VW-specific tools to dial in the perfect fit and feel. Each set includes our reusable link pin shim chart and install directions. Say goodbye to slop.
Early two-bolt wheel cylinder cars need a small spindle-face mod — true?
True. The two-bolt wheel cylinder application covers a small slice of years, so when vendors invest the money to produce spindles, they make them fit the majority of years rather than the few that need a tweak. A small relief in the spindle face with an angle grinder (or similar) lets the backing plate sit flush. Quick fix.
Adding disc brakes — do your BAD Series Gen 1 or Gen 2 kits fit?
Yes. Our BAD Series Disc Brakes fit ALL drum drop spindles — and do NOT fit any drop disc spindles. Sounds odd, but here’s why: most vendors weld caliper mounts directly into their disc spindles. We don’t. We engineer the caliper bracket to bolt onto the spindle using the backing plate mounts. That gives you full versatility — drum brakes, two-piston, four-piston. You choose, not us.
Maintenance Schedule
Built right and maintained right, these last a lifetime.
| Link Pin Adjustment Check | Every 2,500 miles or annually — loosen the clamp bolts and tighten via the 14mm square on the back of the link pin |
| Greasing Schedule | Upper and lower zerks every 2,500 miles or annually |
| Wheel Bearing Thrust | Tighten until the drum/rotor stops moving by hand, back off 1/4 turn, lock it down |
PRO Note
Pack your bearings correctly, lube the seal correctly, and follow the thrust setting above — and failure becomes near non-existent.
PRO-Recommended Accessories & Tools
The kit Airkewld PROs reach for when installing and maintaining drop spindles.
The PRO Toolkit
Built Right. Installed Right. Maintained Right.
Get them built correctly, install them correctly, maintain them correctly — and they’ll last forever. That’s the PRObuilt promise.
Talk to a PRO
Not sure whether DIY, ECObuilt, or PRObuilt is right for your build? The Airkewld PRO's are here. Reach out and we’ll help you spec the right setup — one detail at a time.
All PRObuilt and ECObuilt components are hand-assembled, QC’d, and backed by 24+ years of Classic VW suspension experience at Airkewld. #AirkewldArmy