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Astra H Turbo Chassis Turbo TuningZafira B Turbo Chassis Tuning

Suspension and Chassis Tuning Packages

Courtenay Sport Chassis Pack 1
Whiteline Heavy Duty 24mm Adjustable Anti Roll Bar
 
£235 Fitted


Courtenay Sport Chassis Pack 2
Whiteline Heavy Duty 24mm Adjustable Anti Roll Bar
Quaife ATB Limited Slip Differential including new outer differential bearings and new Fully Synthetic Gear Oil
 

£1265 Fitted

Courtenay Sport Chassis Pack 3
Whiteline Heavy Duty 24mm Adjustable Anti Roll Bar
Quaife ATB Limited Slip Differential including new outer differential bearings and new Fully Synthetic Gear Oil
DAP Road Springs** Pro Kit Springs - Set of 4
 
£1625 Fitted


Courtenay Sport Chassis Pack 4
Whiteline Heavy Duty 24mm Adjustable Anti Roll Bar
Quaife ATB Limited Slip Differential including new outer differential bearings and new Fully Synthetic Gear Oil
DAP** Road Springs and Bilstein B8 Dampers (B6 on Zafira) - Set of 4

£2180 Fitted
** Eibach Pro Springs can be substituted in place of DAP road springs if required.

Rear Anti Roll Bar and Springs

Rear Adjustable Anti Roll Bar Kit Improving handling is not all about springs and/or dampers. There are other aspects of chassis tuning to consider, such as imprroving the car's ability corner. This can be hugely improved by fitting a rear anti-roll bar, thus stiffening up the rear end and greatly improving the car's rear end grip, and its road holding, eliminating the car's naturaly tendancy to understeer. Any car fitted with an uprated rear anti-roll bar will feel more 'alive' and fun to drive with much better levels of grip, without compromising on ride comfort. Without doubt this is the best modification that can be done for an Astra chassis.
Rear Anti Roll Bar - Adjustable (ideal for changing settings for Summer and Winter use or for track days) £193.60 Our Price £183

Anti Roll Bars - Buy Now Click Here!

More information on roll bars car be found on the Whiteline Page............

Uprated Fast Road DAP Springs

To improve the ride and road holding of the Astra H/ZafiraB chassis, for fast road use we recommend the DAP road springs as offering the ultimate in ride and road holding. The car will benefit from a lowered and improved stance as these springs lower by approximately 15-20mm.

Astra H/Zafira B £183.95 per set of 4 Buy Now Click Here!

Eibach Springs

As an alternative for the Astra and Zafira chassis, a set of Eibach springs is an excellent and effective way of achieving this, furthermore the car will benefit from a slightly lowered improved stance. The Eibach Spring Kit lowers by approximately 10-15mm.
£157.85 Astra H/£187.38 Zafira B Buy Now Click Here!
Eibach Spring Kit

Fast Road Suspension Kit

We have put together a first class suspension kit for those on a budget, ideal for fast road use to improve the Astra H chassis. Fast road suspension kit for Astra H 3 dr (non VXR models), 5dr and Van to upgrade the OE factory set up. It comprises of a specifically sourced damper upgrade all round with a set of DAP Road springs, which will lower by 20-40mm depending upon the model. Sport chassis which is already lower from the factory will drop by about 20mm, non sport chassis by about 40mm for improved road holding and performance.

Suitable for Astra H 2.0 petrol trubo and diesel models. Price per kit (Front and Rear Dampers and DAP Springs): £414
 

M32 Quaife ATB Limited Slip Differential

Quaife M32 ATB LSD Click for Full Size Image The Quaife ATB differential for M32 gearboxes. A direct replacement for the standard Vauxhall differential, the Quaife ATB differential transforms your car's performance, making getting the power down onto the road easier, for improved traction and driveability.

Unlike a conventional plate-style limited slip differential, the ATB diff relies on gears rather than clutch plates for its operation. That means it is much smoother in operation. Because of this, the ATB differential never locks harshly with a set pre-load of wheel slip across the driven axle, like a conventional LSD. Rather, the differential automatically biases the torque away from the spinning wheel across the axle, to a constantly varying degree, and never locks.
The Quaife ATB differential has many benefits over a standard open differential, including maximising traction and minimizing wheelspin, eliminating torque steer and snatching in front wheel drive cars compared to conventional LSD units, and a maintenance-free design which retains the standard oil lubrication.

Available for Astra 1.9 CDTi, Astra H 2.0 Turbo (Z20LEL/Z20LER), Astra H 1.6 Turbo (Z16LET), Zafira Z20LER, Zafira 1.9 CDTi. 

LSD Retail Price £774 Special Price £Check Shop. Diff bearings (available with diff) £49.80 per pair. Buy Now Click Here!
 In House Fitting Available.

M32 ATB LSD

M32 ATB LSD

M32 ATB LSD Fitting

Courtenay Sport Polyurethane Bush Kits

Once the springs and dampers have been sorted, we believe the next most beneficial area for attention is the bushes. They are made to be flexible to some extent to absorb harshness, but as they age the original rubber loses its 'tone' and gets slacker. This allows the suspension system to move relative to the chassis so the car's handling and response become less sharp. The grade of polyurethane used in our uprated bushes is not so hard as to cause undue harshness, however they provide a big improvement over standard and they keep their 'tone' much longer than the original rubber, so the effect lasts longer.

For Astra H and Zafira B front lower wishbone bushes available. The kit consists of front wishbone front bush and front wishbone rear bush.

Also available to replace the front wishbone rear bush is a caster adjustment bush to give an additional half a degree of front caster for improved turn in.

Unlike the original bushes, Courtenay Sport Polyurethane Bushes require no special tools to fit and are therefore a DIY proposition - or we can fit them for you if you prefer.

Poly Bushes Astra H/Zafira B Front Wishbone - Buy Now Click Here!
Caster Adjustment Bush for front wishbone rear bush location* - Buy Now Click Here!
*Note: If using the caster adjustment bush for the front wishbone rear bush, you only need to purchase the front wishbone front poly bish.

Uprated Engine Mounts

Uprated engine mounts for Astra H VXR/OPC by VibraTechnics. Available in Road Spec and Race/Competition Spec. These mounts will greatly reduce the amount of engine movement under hard acceleration and braking, resulting in a sharper gear change and a 'tighter' feel to the car, ultimately improving grip, handling and turn in.

Front - A complete insert requires the original insert to be pressed out for the new one to be fitted. Road Spec approximately 3 times stiffer than OE, and Race Spec 10 times stiffer.
Road - £103.00 :: :: Race - £107.00

Rear - A complete direct replacement mount.
Road - £112.00 :: :: Race - £117.00

Side - A complete replacement side mount for the right hand engine mount (cambelt end)
Road - £115.00 :: :: Race - £121.00

Buy Now Click Here!
Uprated Front Engine Mount
Uprated Front Engine Mount
Uprated Rear Engine Mount
Uprated Rear Engine Mount
Uprated Side Engine Mount
Uprated Side Engine Mount

Z20LEx Front Uprated Poly Engine Mount - Astra H Zafira B 2.0 Turbo Models

Exclusively developed by Courtenay Sport, an uprated polyurethane front engine mount for Astra H and Zafira B 2.0 Turbo models including VXR.

This engine mount is designed to sleeve into the existing front engine mount, to strengthen it and reduce the forwards and backwards engine movement during acceleration and on over run/lift off.

Ideal for Fast Road and Track Day use.

Finished in Red, exclusively manufactured for Courtenay Sport - Shore Hardness 80. Item 20

Suitable for Astra H 2.0 Turbo and Zafira B Z20LEx models.

Price - £21.60 Buy Now Click Here!

Also available in Black Material for track use - Material Shore Hardness 95 £25.20 Buy Now Click Here!
Z20LEx Uprated Poly Engine Mount
Z20LEx Uprated Poly Engine Mount
Z20LEx Uprated Poly Engine Mount Shown Fitted
Z20LEx Uprated Poly Engine Mount Shown Fitted

Z20LEx Uprated Gearbox Side Poly Engine Mount Insert

Z20LEx Uprated Poly Gearbox Side Mount
Z20LEx Uprated Poly Side Mount
Polyurethane Engine Mount Insert for Astra H/Zafira B with M32 gearbox. The factory mount is prone to splitting, this mount sleeves into the original factory rubber engine to further stiffen the mount.
Made from Yellow Material 70 Shore Hardness suggested for Road Use or Black Material 95 Shore Hardness for Trackdays. Item 21

Yellow: £25.20 Buy Now Click Here! Black: £27.60 Buy Now Click Here!

Use the reference diagram (right) to identify bush location.

Z20LEx Uprated Right Hand Side Poly Engine Mount Insert

Z20LEx Uprated Poly Right Hand Side Mount
Z20LEx Uprated Poly RHS Mount
Polyurethane Engine Mount Insert for Astra H/Zafira B 2.0 T for the Right Hand Side (Cambelt End) Engine Mount. To stiffen the right hand engine mount and reduce its movement, this mount sleeves into the original factory rubber engine.

Made from Yellow Material 70 Shore Hardness suggested for Road Use or Black Material 95 Shore Hardness for Trackdays. Item 22

Yellow: £22.50 Buy Now Click Here! Black: £26.10 Buy Now Click Here!

Use the reference diagram (above right) to identify bush location.

Polyurethane Bushes Road

Attention to the factory rubber bushes is beneficial. They are made to be flexible to some extent to absorb harshness, but as they age the original rubber loses its 'tone' and gets slacker. This allows the suspension system to move relative to the chassis so the car's handling and response become less sharp. The grade of polyurethane used in our uprated bushes is not so hard as to cause undue harshness, however they provide a big improvement over standard and they keep their 'tone' much longer than the original rubber, so the effect lasts longer.
Kits are available as Front and Rear axle sets, or as individual bushes if required.

Unlike the original bushes, Polyurethane Bushes require no special tools to fit and are therefore a relatively easy DIY proposition - or we can fit them for you if you prefer.

Purple Bushes are for road use and have a material shore A harness of 80

Use the reference diagram (above right) to identify bush location.

Uprated Bush Kits Road

Model Front Rear Front Kit includes: Front Wishbone Front Bushes (2) and Front Wishbone Rear Bushes (2)*(Items 1&2)

*Note: Also available in lieu of Front Wishbone Rear Bushes: Caster Adjustment Front Wishbone Rear Poly Bushes - Increase caster for enhanced traction and turn in. - See Below

Rear Kit: Rear Beam Bushes (2) (Item 5)
Astra H (Mk5) and
Zafira B
 Buy Now Click Here! Buy Now Click Here!
Bushes Front Lower Arms* £82.50/£109.25* N/A
Front Engine Mount £21.60 N/A
Left Engine Mount £25.20 N/A
Right Engine Mount £22.50 N/A
Rear Beam - £82.50
Fitting £144.00  
*Front Wishbone Bush Kit with Caster Change Bushes is £109.25. - Kit includes Front Wishbone Front Bushes and Front Wishbone Caster Change rear Bushes.

Engine Bed/Subframe Bushes

An engineered a solution to replace the factory engine bed/subframe bushes in Astra H and Zafria B which can be prone to failure and contribute to vague handling. These stiffer engine bed bushes help improve the front end feel of the car especially during turn-in and cornering. By removing the flex in the subframe bushes the handling is improved giving a more positive feel to the front end.

These Front Subframe Bushes feature two polyurethane top-hat style bushes that makes for simple installation and durability. The bushes house a stainless steel sleeve and are supported by zinc coated steel washers at each end for increased support under load.

Poly bushes will be resistant to corrosion and the addition of a stainless steel sleeve should help prevent the bed bolts from seizing into the bushes, which can happen with the factory bushes.

These new bushes replace OE part numbers 90498689, 9223022, 9223023 and 13107328 used across the model ranges.

Suitable for Astra H All Models. 6 required per car.
Purple Road Spec (Item 30): £22 each
Poly Engine Bed Bushes

Powerflex Black Series Suspension Bushes

There are a number of applications where chassis performance is the only consideration. For the ultimate in performance Powerflex introduce The Black Series. A new range of bushes developed for Race, Rally and Circuit use. Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than the purple performance material which is 80 Shore material.
Powerflex Black Series.........

Designed for the Track - Ready to Race -
Engineered to be the best.

Front Wishbone Bushes :: £98.40 per set (4 Bushes)
Front ARB Bushes £22.80 each

Front Engine Mount Insert :: £25.20
Gearbox Side Engine Mount Insert :: £27.60
Right Side Engine Mount Insert :: £26.10

Rear Beam Mounting Bushes :: £93.60

Engine Bed/Subframe Bushes

Also available in track spec black material.

Details above. 6 required per car.

Black Track Spec (Item 30): £24 each
Poly Engine Bed Bushes

Whiteline Poly Bushed Front Wishbones

Front Wishbone Direct replacement front wishbones for Astra H models. These front wishbones are brand new and come pre-fitted with uprated 85 Shore polyurethane wishbone bushes in black and a brand new high quality OEM ball joint.

This makes fitting uprated poly bushes far easier and much more straightforward. No need to spend hours knocking out existing bushes and fitting new ones, simply undo 3 bolts, drop the original arm off the car and fit the direct replacement wishbone. £90.00 each side

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Courtenay Sport Vauxhall Tuning
Courtenay Sport
 Vauxhall Tuning

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