Corbeau direct-fit sub-frames for the BMW 1 Series. Part code BMW1SERIES.
The BMW 1 Series is the rear-wheel-drive small BMW, sitting below the 3-Series in the range but sharing the same drive layout. The 1M and later 135i have a strong following in track day use and club motorsport, and the body’s lighter weight makes it a genuinely competitive tool at the right spec. The standard Sport seat leaves the driver sliding during hard cornering, and a bucket seat is one of the first changes drivers make for circuit use.
These sub-frames bolt to the original 1 Series floor fixing points without modification. Corbeau-seat-specific bolt pattern, not cross-brand compatible. Both driver and passenger positions covered.
Price is for one sub-frame set. Seat is not included.
Have you written anything about this exact product?
Yes, we have covered this exact product: Top 5 reclining seat choices for your BMW 1-Series, including our fitting guide. That is first-hand coverage from our own builds and showroom, not brochure copy.
Will this fit my car?
This frame is car-specific, so match the vehicle in the product name to your exact car and generation. If you are unsure, send us the registration and we will confirm before you order.
Which seats does it take?
Check the bolt pattern in the specification against your seat. The Compatible seats tab above lists what bolts straight on. If your seat is not listed, tell us what you run and we will confirm the fit.
Do I keep fore-and-aft adjustment?
Only with a sliding runner between the frame and the seat, which is a separate part on Corbeau frames. If more than one person drives the car, budget for the runner. Our guide to sliding runners explains the options and widths.