PCI Racing BMW E46 3-Series (1999-2006) Sliding Sub Frame

From £330.00 Incl. VATFrom £275.00 Excl. VAT

PCI Racing BMW E46 3-Series (1999-2006) Sliding Sub Frame by PCI Racing. Brand: PCI Racing. Sport Seat Position: RHD Driver Side, RHD Passenger Side. Construction: Steel. Available now from stock.

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Size/Fitting guide

SKU: SM-E46-S1 Categories: PCI Racing, BMW 3 Series (E46) Sport Seat Options, PCI Racing Frames

PCI Racing BMW E46 3-Series (1999-2006) Sliding Sub Frame by PCI Racing. Here is what it is and what to check before you order. Motorsport parts are bought on fitment and approval before anything else. Check the specification below against your car and, if you compete, against the regulations for your class.

PCI Racing BMW E46 3-Series (1999-2006) Sliding Sub Frame specification

Category	PCI Racing
Brand	PCI Racing
Sport Seat Position	RHD Driver Side, RHD Passenger Side
Construction	Steel
Fixing Type	Side mount
Make & model	BMW E46
Part number	SM-E46-S1

Options available

Choose your options at the top of this page before adding to the basket.

Sport Seat Position. RHD Driver Side, RHD Passenger Side

If the combination you need is not listed, ask us. A lot of this kit can be ordered to spec even where it is not shown as an option.

Choosing the right product

Motorsport parts are bought on fitment and approval before anything else. Check the specification below against your car and, if you compete, against the regulations for your class.

Check the specification against your car before ordering. If anything is unclear, send us your registration or your car details and we will confirm the fit before you buy.

We have been supplying motorsport kit since 2003, so if you are unsure between two options, ask.

What to check before you order

A handful of details decide whether this product suits your car. These are the ones that matter.

Brand: PCI Racing. Check this against what you already run before ordering.
Sport Seat Position: RHD Driver Side, RHD Passenger Side. Check this against what you already run before ordering.
Construction: Steel. Check this against what you already run before ordering.
Fixing Type: Side mount. Check this against what you already run before ordering.
Make & model: BMW E46. Check this against what you already run before ordering.

If any of it does not match what you have, ask us before you buy.

Buying the PCI Racing BMW E46 3-Series (1999-2006) Sliding Sub Frame from SportSeats4u

Stock is shown live on this page. If you need the PCI Racing BMW E46 3-Series (1999-2006) Sliding Sub Frame for a specific event date, tell us when you order and we will confirm the lead time up front.

We have been in the motorsport trade since 2003, supplying club racers, race teams and workshops across the UK and exporting worldwide. That means the advice you get on fitment comes from people who use this kit, not from a spec sheet someone copied over.

If you are buying for yourself and you are torn between two options, call us. Five minutes on the phone usually settles it.

PCI Racing BMW E46 3-Series (1999-2006) Sliding Sub Frame questions

Will the PCI Racing BMW E46 3-Series (1999-2006) Sliding Sub Frame fit my car?

Check the specification above against your vehicle. If you are not certain, send us the registration and we will confirm before you order.

Is it in stock?

Stock is shown live on this page. If you need it for a specific date, tell us and we will confirm the lead time before you order.

How do I check it suits my car?

Send us your registration or the make, model and year and we will confirm the fit before you order.

Not sure the PCI Racing BMW E46 3-Series (1999-2006) Sliding Sub Frame is the right choice? Send us your car details or what you compete in and we will confirm before you order.

Browse more pci racing. Related: PCI Racing BMW Z4 (2002-2008) Sliding Sub Frame, PCI Racing Porsche 911 996 Sliding Sub Frame, PCI Racing Porsche Boxster 987 Sliding Sub Frame. Background reading: motorsport disciplines and what they require.

Brand	PCI Racing
Sport Seat Position	RHD Driver Side, RHD Passenger Side
Construction	Steel
Fixing Type	Side mount
Make & model	BMW E46

In-store displays:

We have a premium range of over 125 seats from brands including: Bimarco, Cobra, Corbeau, Sparco, OMP, Recaro, GP-Race, and Bride to name just a few brands we work with.

Alongside this, we also stock and display HANS devices, harnesses, race-wear, race-suits, FIA helmets and various other safety equipment. If you are looking to visit us to see and try any particular seat or product, please contact us in advance and we’ll be happy to help.

In-Store appointments:

Due to the specialist nature of our services, we do ask that you please contact us in advance to book an appointment. We have multiple slots available each day including selected availability at the weekend.

Working by appointment allows us to dedicate our time with you and provide a personal and professional service. We’ll always ensure you leave with the right equipment for your needs.

Slice it in 3: (option 1)

Available on orders over £50.00

Spread the cost in 3 equal card payments.
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Simply add your products to your basket and checkout.
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Pay later finance: (option 2)

Available on orders over £300.00

Spread the cost of your purchase into equal monthly payments.
Available over 12, 24 or 36 months at just 12.9% interest
Simply add your products to your basket and checkout.
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Fast delivery lead times:

If you require fast delivery, please contact us in advance of ordering and we’ll happily check stock allocation and availability for you. We carry a large amount of stock at our showroom and across multiple distribution hubs. This allows us to provide immediate dispatch across a huge number of brands from Corbeau and Cobra through to Sparco and OMP. (Does not apply to all items)

Due to the niche market we work in, some products are custom hand made to order, or special order from manufacturers like PCI Racing and Planted Technology. If you want to know how fast a product will be dispatched. Simply drop us a message through our Contact us form.

Addtional lead time notes:

Quick dispatch: Stocked products are dispatched within 24-48 hours with Parcel Force.
Sparco roll cages: We can only deliver these to a registered (LTD) company address.
In-store collection: Please contact us in advance to book an in-store collection appointment.

Availability

Current lead times: PCI Racing brackets are special order from the USA. We bring over 1 batch every 4-6 weeks. Each product we import is pre-sold for each customer order and we recommend getting your order in as soon as possible to ensure a quick delivery.

Need them fast? Please contact us in advance to check our stock and product availability (We may on occasion have over-stock of popular models). We can then ensure to meet your deadlines once you’ve checked out online.

Compatible bucket seats

We’re excited to bring you our selection of side-mounted bucket seats compatible with this PCI Racing fitting kit.

The PCI Racing seat brackets have a standard 290mm FIA side fixing bolt pattern. This allows the installation of almost any side-mounted bucket seat.

Here are our top 10 recommendations (More seats will be suitable, contact us for information)

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Cobra Monaco Pro FIA Motorsport Bucket Seat
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Sabelt GT3 FIA Motorsport Seat
£517.20 Incl. VAT£431.00 Excl. VAT Add to basket
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250+ colours
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Mirco RS2 3D Fibreglass FIA Motorsport Seat
From £425.40 Incl. VATFrom £354.50 Excl. VAT Select options This product has multiple variants. The options may be chosen on the product page
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Klarna Ready

Mirco GT 3D Fabric FIA Motorsport Seat
From £388.80 Incl. VATFrom £324.00 Excl. VAT Select options This product has multiple variants. The options may be chosen on the product page
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Top 10 product
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Sparco Pro 2000 QRT FIA Motorsport bucket seat
£599.40 Incl. VAT£499.50 Excl. VAT Add to basket
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Recaro Pole Position with ABE Bucket Seat
From £1,039.50 Incl. VATFrom £866.25 Excl. VAT Select options This product has multiple variants. The options may be chosen on the product page
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Sparco Rev QRT FIA Motorsport Bucket Seat
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Seat subframe and fitting equipment guide

A subframe is the part that bolts to your car’s original seat mounting points and gives the seat something to fix to. It is car specific, so the first thing to get right is the make, model and year. The second is which side of the car it is for.

Most subframes are handedOf the fitting equipment we stock, the large majority are listed as either RHD driver side or RHD passenger side. They are mirror images and they will not swap over. Ordering a pair when you only need one, or the wrong side when you need one, is the most common mistake in this category.

Order in this sequence

1Confirm the seat fixing typeSide mount or base mount. It is on every seat product page and it decides everything after it.

2Find the subframe for your carMake, model and year. Our subframes are vehicle specific, not universal.

3Pick the right sideDriver or passenger. Most are handed and they are not interchangeable.

4Add brackets if neededA side mount seat needs side mounts as well as the subframe. A base mount seat may not.

Buying the subframe first is how people end up with parts that will not go together. The seat decides the fixing type, the fixing type decides the brackets, and the car decides the subframe. Work down that chain rather than up it.

Material

Material	What it means
Steel	The standard. Strong and well priced
Aluminium	Lighter, and usually the higher priced option
Titanium	Lightest of the three. Specialist, and priced accordingly

For almost every road and track day car, steel is the sensible answer. Aluminium and titanium are worth it where you are chasing weight in a competition car and the regulations allow, and the saving on a pair of subframes is smaller than people expect.

Sliding and fixed

Some subframes are sliding, with the runner mechanism built in, and some are fixed. A sliding subframe is one part rather than a subframe plus separate runners, which is tidier and usually lower. A fixed subframe puts the seat where you bolt it and nowhere else, which is lighter, stiffer and fine if only you drive the car.

If two people share the car, look for a sliding subframe before you look at adding runners on top of a fixed one, because stacking a runner on a subframe raises the seat twice.

Bolt pattern

Where a subframe lists a fixing bolt pattern it will be 291 mm or 345 mm wide. That is the span across the seat’s mounting rails, and it is the same measurement that decides which sliding runner handle you need. If you already know your runner width, you know your bolt pattern.

What the subframe does and does not include

A subframe gets you from the car’s floor to a mounting plane. It does not usually include the side mount brackets that connect a side mount seat to it, and it does not include the seat. Check the product for what is in the box, and read our seat mounting and fixing points guide if you are not sure what else you need.

Check the height before you commitEvery layer you add lifts you: subframe, then runners, then brackets. In a car with a cage and a helmet that is the constraint that bites. If you are tall, work out your total stack height before ordering, and favour a sliding subframe or a low profile bracket over stacking parts.

Cars we cover

The range runs to well over a thousand parts across PCI Racing, Planted Technology, SW Motorsports, M2 Motorsport, Sparco, OMP, Recaro, Corbeau, Cobra and Endurance, covering most common performance cars and a lot of uncommon ones. Search your car rather than browsing, and if you cannot find it, ring us, because we can often get a subframe made for something that is not listed.

Send us the car and the seatMake, model, year, which side, and the seat you have chosen. We will tell you exactly which subframe and brackets you need, and whether a sliding one would suit you better. Call 0115 989 3488 or email Sales@GSMPerformance.co.uk.

All specifications read from our own product data for the fitting equipment categories, checked 2 August 2026.

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