ROBERT AXLE PROJECT · US-machined thru-axle adapters

Genuine Robert Axle Project BOB Trailer bobbins (per pair) — a direct replacement for your existing part.

Robert Axle Project Bobbins for BOB Trailers - Per Pair

A genuine Robert Axle Project replacement part for BOB trailers.

These bobbins are made by the Robert Axle Project to complete their axles for compatibility with the BOB Trailer. - Sold in pairs. - Manufactured from 303 Stainless Steel. - Includes stainless steel hardware for attaching to axle.

Highlights

Genuine RAP part — Direct replacement, no compromise on fit
Made in USA — Machined in Bend, Oregon

At a glance

Best for — Replacing a lost or worn BOB trailer part
Ideal rider — BOB trailer owners

Full specification

Material — 7075 aluminium axle shaft with stainless steel ends
Made in — USA — Bend, Oregon
Warranty — Lifetime — Robert Axle Project
Compatible brands — BOB

Pro tip

Keep the original hardware in a small parts bin — RAP parts are direct replacements, and having the stock part handy is helpful for future setup changes.

What's in the box

Bobbins for BOB Trailers - Per Pair — Genuine RAP replacement part

Will it fit

A genuine Robert Axle Project replacement part. Fits the corresponding BOB trailer setup — replace like-for-like.

Quick answer

Genuine Robert Axle Project BOB Trailer bobbins (per pair) — a direct replacement for your existing part. £34.95.

Fast facts

Material: 7075 aluminium axle shaft with stainless steel ends
Made in: USA — Bend, Oregon
Warranty: Lifetime (RAP)
SKU: 42198

Choose if

You need a like-for-like replacement for the corresponding BOB trailer part.

Not ideal if

You need a different BOB spare — check the specific part number against RAP's catalogue first.

FAQ

How do I know if this axle fits my bike?

Check your bike manufacturer's spec sheet for rear-axle diameter, thread pitch and total length. Or unscrew your existing rear axle and read the markings. Or email fit@hitchabike.co.uk with your bike make, model and year.

Is the trailer hitch included?

No. The hitch is what comes with your trailer (BOB skewer, Croozer Click & Crooz, Thule ball hitch, etc.). This axle just gives that hitch a mounting point on your bike.

What tool do I need to install it?

A 5 mm Allen key — the same one you likely already carry.

Is there a warranty?

Yes — Robert Axle Project offer a lifetime warranty on their axles and adapters.

Where is it made?

Machined and tested in Bend, Oregon, USA.