E46 M3 CSL Handling & Suspension Upgrades

By Thorney Motorsport

Thorney Motorsport BMW E46 M3 CSL-R at Oulton Park
Thorney Motorsport E46 M3 & CSL Handling Upgrades
Stage 1    Stage 2    Stage 3    Stage 4    Stage 5

Thorney Motorsport - BMW E46 M3 CSL Stage 1 Handling Upgrade

TMS Fast Road Geometry Setup (From £150)


Vehicles arrive from the factory with fairly benign settings. The manufacturers don't want people throwing themselves into hedgerows at every corner. This does mean that handling is compromised. With standard suspension we are obviously limited by what we can do, but we can extract a little more excitement from the chassis.

We have a 4-Wheel alignment rig at HQ in Milton Keynes. To progress further you'd need to introduce suspension changes, either springs or fully adjustable coilovers from Nitron or Moton. See details below.

Fast Road Geometry setup prices are based upon our hourly rate. It usually takes 60-90 minutes to complete.


Thorney Motorsport - BMW E46 M3 CSL Stage 2 Handling Upgrade

Eibach Pro-Kit Lowering Springs & Fast Road Geometry Setup (£215 Supplied, £415 Fitted)


CSLsuspension1_1.jpg
Ride height comparison for Eibach springs.
Normally, just changing the springs on a car tends to make the ride unacceptably harsh. The Eibach Pro-Kit is very good at avoiding this. A lowered look is achieved and the handling improved thanks to a lower centre of gravity.

If you're just looking to lower your M3 CSL with a mild upgrade in handling, this is your best bet.For real upgrades in handling, we recommend fully adjustable coilover kits from Nitron or Moton. The greater adjustment available, the better we can tone the car to your needs.

Price List:
(Click to Purchase):


Eibach Pro-Kit (E46): £215



Thorney Motorsport - BMW E46 M3 CSL Stage 3 Handling Upgrades

1-Way Adjustable Coilover Suspension by Nitron & Moton


Fully adjustable suspension is the only way to truly transform the handling of your CSL. Using either Nitron or Moton coilovers (as we use on our CSL Cup cars) we are able to tailor your car to your track / road needs.Mono-tube shocks are as it sounds, they have a single tube in the construction, this means that they can run larger diameter piston which allows for a larger volume of oil in the shock. The more oil used means the less the shock is affected by heat build up and so the damping retains consistency in its use, it also means the shock is a lot lighter than a dual tube design (which has another tube inside the outer).

However the best attribute about mono-tube shocks is that their adjustment is very sensitive, a single click on the adjustment can make a huge difference to how the shock feels on the car, that's very different to dual tube where you really are limited to how much adjustment you can really get. All F1 cars use mono-tube shocks.

Nitron NTRSport Coilover Kit:
£1,735 Supplied


NTCBM011S_web_1.jpg
Nitron NTRSport for BMW E46 M3
The first step in the coilover ladder. The Sport kit is a 1-Way bump & rebound adjustable kit fitted with TMS specified Eibach Springs. The single adjuster sets bump & rebound together for a more road-based setup.


Nitron NTRSport+ Coilover Kit:
£2,060.00 Supplied


NTCBM011S__01_1000px_1.jpg
Nitron NTRSport+ for BMW E46 M3
The NTRSport+ kit is as per the NTRSport kit but adds adjustable front top mounts. These are camber and caster adjustable. If you're serious about taking your road-CSL on track then the Sport+ kit is the way to go.


Moton SS 1-Way Road Coilover Kit:
£2,958.00 Supplied


Moton_E92_M3_Web005_1.jpg
Front & Rear Shock Absorber Assembly (Moton 1-Way)
Offering a single adjuster for both Bump & Rebound the SS1 is perfect for on-road and on-track usage. The SS1 utilises your standard BMW top mounts also.

Price List:
(Click to Purchase)


Nitron NTRSport Kit: £1735.00
Nitron NTRSport+ Kit: £2060.0
Moton SS 1-Way Kit: £2,958.00

CSLCup_Croft_011_1.jpg
CSL Cup Series Winner Dan Stringfellow on his NTRRace setup.
CSLCup_Croft_013_1.jpg
CSL Cup Series Leader Dan Stringfellow on his NTRRace setup.

Thorney Motorsport BMW E90/92/93 M3 Stage 4 Handling Upgrades

2-Way Adjustable Coilover Suspension by Nitron & Moton


We’re often asked which suspension is ‘best’ for a car and the short answer is that we’ve not found one supplier that can do all of it, suspension is about hours of research and development, time in the cars on road, track, in competition and no one supplier is good for every application.

Moton_E92_M3_Web002_1.jpg
Outstanding Build Quality from Moton
We’ve worked with a lot of suppliers over the years and each one offers the best application on different cars, however for the BMW range we tried something different – Moton - synonymous with Motor Racing of all levels for superior quality components.


Moton SS 2-Way Road Coilover Kit:
£3,984.00 Supplied


Moton_E92_M3_Web005_1.jpg
Front & Rear Shock Absorber Assembly (Moton 1-Way)
The SS2-Way kit from Moton introduces separate Bump & Rebound adjustment, together with adjustable front top mounts so you can run upwards of 5 degrees negative camber.


Nitron NTRTrack Coilover Kit:
£3,356.00 Supplied


NTCBM011S__01_1000px_1.jpg
Nitron NTRSport+ for BMW E46 M3
The ultimate in Track-Day spec M3 Suspension by Nitron. Adding stainless steel ball bearing top mounts, Independent Bump & Rebound adjustment & remote "piggy-back" reservoirs on the shock bodies. These are for circuit oriented cars, they come preset with C-Spanners, bearing spacers & Eibach springs.

Price List:
(Click to Purchase)


Nitron NTRTrack Kit: £3,356.50
Moton SS 2-Way Kit: £3,984.00

CSLCup_Croft_004.jpg
CSL Cup Race Winner John Thorne on Moton Competition Suspension
CSLCup_Croft_009.jpg
CSL Cup Race Winner John Thorne on Moton Competition Suspension


Thorney Motorsport BMW E46 M3 - Stage 5 Handling Upgrades

Competition Moton & Nitron Suspension Kits


We’ve a long history with working with Nitron, we co-developed the VX220 kits for road and track and we were delighted to be involved with the development of the BMW range of shock absorbers, a long season of racing in the CSL Cup has opened our eyes to the benefits of running monotube shocks for the BMW.

Nitron NTRRace Coilover Kit
£4,005.00 Supplied

NTCBM011S__01_1000px_1.jpg
Nitron NTRSport+ for BMW E46 M3
Top dog Nitron – fully three way adjustable remote reservoir suitable for racing and used to great effect by Dan Stringfellow in the CSL Cup to win the 2009 and 2010 series.


Moton Competition Kit:
From: £4,495.00 Supplied

Moton_E92_M3_Web001_1.jpg
Outstanding Build Quality from Moton
Please contact us for more information and to discuss your requirements on the Moton Competition application for the 3-Series. There are 2, 3 and 4-Way kits available. Prices start at £4,495 + VAT for the 2-Way kit.

Price List:
(Click to Purchase)


Nitron NTRRace Kit: £4,005.00
Moton Competition Suspension Kit: £POA

CSLCup_Croft_011_1.jpg
CSL Cup Series Winner Dan Stringfellow on his NTRRace setup.
CSLCup_Croft_013_1.jpg
CSL Cup Series Leader Dan Stringfellow on his NTRRace setup.


Thorney Motorsport on Facebook