Editing Jaguar XJS (section)

== Aftermarket modifications ==
'''TWR XJS'''

Tom Walkinshaw Racing (TWR) formed JaguarSport in partnership with Jaguar in 1988. XJR-S was their first model. But prior to 1988, specifically between 1984 and 1988, TWR offered sporting versions of XJS coupe and cabriolet cars. Various bodywork, trim and engine upgrade options were available on both the 3.6 litre 6-cylinder and 5.3 litre V12 vehicles. These cars are particularly unique and rare, often misinterpreted and misunderstood due to the poor record keeping for the pre-1988 cars. Further confusion is caused by the production of later XJR-S "JaguarSport" cars to similar specifications.

Some of the known upgrades included engine and transmission, low drag body kit, special bumper kit (for North American market), 8"x16" low drag Speedline Italian made alloy wheels fitted with "TWR" centre cap (very similar to later XJR-S wheels fitted with "Sport" centre cap), TWR suspension kit, TWR brake kit, TWR steering wheel, manual gearbox (5-speed close ratio), automatic gearbox quick shift kit, automatic gearshift lever (screw on leather type as used on XJR-S), TWR power assisted steering valve and others.

TWR body kits included a rear spoiler with a distinctive hole for radio antenna on the right hand side. It was also shaped differently than later XJR-S spoilers as it stood higher and had more distinctive flaps on the sides.

The fibreglass side mouldings (side skirts) were equipped with rubber seams.

Front bumper modifications included removal of the chrome and reinforcing front air dam and rear bumper featured exhaust exit apertures and rear integrated fog lights.

=== Lynx Eventer ===
[[File:Lynx Eventer facelift rear.jpg|thumb|left|Lynx Eventer]]



A number of XJS's were modified by coachbuilders Lynx to create a three-door shooting brake, marketed as the ''Lynx Eventer''. Records suggest that 52 pre-facelift XJ-S, and 15 post-facelift XJS, were adapted, with 18 being left hand drive and 49 being right hand drive.<ref>{{cite web|url=http://www.lynxeventer.com/en/lynx/|title=Lynx Eventer webpage}}</ref>

=== Lister-Jaguar XJS ===
[[File:Lister (19789030873).jpg|thumb|left|A Lister-Jaguar XJS]]
[[File:1990 Lister Le Mans.jpg|thumb|1990 Lister-Jaguar XJS Le Mans]]
In 1986, the newly-formed [[Lister Cars]], under the leadership of engineer Laurence Pearce, began offering a high performance package for the Jaguar XJS. The cars were sold as Lister-Jaguar and 90 customer cars in total were converted. Lister teamed up with two manufacturers namely WP Automotive and BLE Automotive to carry out the conversion process. The standard package included increased engine displacement to 7.0-litres, a modified fuel injection system with four additional injectors and throttle bodies, larger engine valves along with connecting rods manufactured by [[Cosworth]], a new crankshaft, new cylinder heads, new inlet and exhaust valves, new bearing caps, and a new body kit featuring a spoiler at the rear with a modified rear light clusters and flared wheel arches to accommodate the wide tyres. The modified suspension system featured Koni dampers having 30% stiffer rebound than the original and having a modified rear subframe arrangement with wishbones and radius arms relocated to provide greater triangulation and reduce axle tramp. The new shocks were 100% stiffer at the front and 50% stiffer at the rear. The braking system had ventilated brake discs and were moved outward for better cooling and stability. The interior was also modified and now had Recaro racing bucket seats and a new steering wheel with optimised feedback. The modified engine was rated at {{cvt|496|bhp|kW|0}} and {{cvt|500|lbft|Nm|0}} of torque.<ref name=KC18>{{cite magazine|url=https://www.autocar.co.uk/car-news/anything-goes-throwback-thursday/throwback-thursday-1989-lister-xj-s-first-drive | archive-url = https://web.archive.org/web/20231018110544/https://www.autocar.co.uk/car-news/throwback-thursday-1989-lister-xj-s-first-drive | archive-date = 2023-10-18 | title = Throwback Thursday: 1989 Lister XJ-S first drive | date = 2018-07-12|first=Kris|last=Culmer|magazine=[[Autocar (magazine)|Autocar]] }}</ref> The engine was mated to a 5-speed [[Getrag]] manual transmission. The cars were fitted with 17-inch wheels with wide Pirelli tyres measuring 10 inches at the front and 13 inches at the rear. Performance figures include a 0-{{cvt|60|mph|km/h|0|abbr=on|order=flip}} acceleration time of 4.5 seconds and a top speed of {{cvt|200|mph|km/h|0|abbr=on}}.<ref name=KC18/><ref name="AW">{{cite web|url=https://autoweek.com/article/auctions/604-hp-lister-jaguar-xjs-70-le-mans-coupe-powerslides-auction|title=7.0-litre Lister-Jaguar XJS LeMans Coupé Powerslides To Auction| first = Jay | last = Ramey | date=2015-02-06|work=Autoweek|access-date=2019-04-16}}</ref>

Some customers chose to have their cars further modified with the addition of the Le Mans package. The package included a 6-speed Getrag manual transmission, a new exhaust system, and twin-superchargers over the standard package applied in order to extract a power output of {{cvt|604|bhp|kW|0}} from the engine.<ref name="AW"/><ref>{{cite web|url=https://www.classicdriver.com/en/article/cars/how-lister-turned-xjs-ferrari-beater|title=How Lister turned the XJS into a Ferrari-beater|work=Classic Driver|date=2014-11-28|access-date=2019-04-16}}</ref><ref>{{cite web|url=https://www.carthrottle.com/post/w63ovl6/|title=Crouching Tiger - Lister-Jaguar XJS Le Mans|work=CarThrottle|date=7 May 2017 |access-date=2019-04-16}}</ref>
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=== XJS Monaco ===

Under license from Jaguar build by Paul Bailey Design. The Sultan of Brunei is said to have purchased two of the 11 cars completed.<ref>{{Cite web|url=https://www.carandclassic.co.uk/car/C1019745|title = 1990 JAGUAR XJS MONACO SOLD &#124; Car and Classic}}</ref><ref>{{Cite web|url=https://www.gtplanet.net/forum/threads/jaguar-xjs-monaco-1993.327238/|title=Jaguar XJS "Monaco" 1993|date=21 April 2015 }}</ref>