Suffolk SS100

The original Jaguar SS100 was one of the most important cars every produced in England. This beautiful car was designed in 1935 by William Lyons, the founder of Jaguar Cars Limited.

The Jaguar SS100 marked the high point of English sports car design before the start of World War II. When the leading motoring writers of Europe selected their choice of the 100 most important cars of the 20th century, they included the legendary SS Jaguar 100.

Only three hundred and fourteen SS Jaguar 100s were ever made, however there cannot be a more iconic or widely recognised car. It is one of the quintessential pre-war sports cars, and it launched Jaguar’s name as a sports car manufacturer.

At Suffolk Sportscars we produce a superb visual recreation of the original SS Jaguar 100, with the additional benefits of modern brakes, suspension and steering, to meet the demands of today’s drivers. It is an ideal touring car, easily covering hundreds of miles in great comfort. The Jaguar XJ6, known as one of the most comfortable saloon cars ever built, provides us with the suspension and components, and makes this level of comfort possible in all of our cars.

We have now made over three hundred and twenty five of our Suffolk SS100 reproductions. We hope that our website will illustrate the skills of all our fantastic team here and that you take the opportunity to come and visit us at Woodbridge. We are a family business with 20 years experience of making the Suffolk SS100, with hundreds of delighted customers all over the world.

We build small number of cars every year, all to customer specifications. We can build you this classic sports car, completely bespoke to your mechanical specification, in your choice of body colour and interior trim, with any optional extras. In the Gallery section you can see many of the cars that we have previously built.

If you are inspired then we can also provide you with a Self Build package, where the vehicle comes ready for simple assembly and fitting at home, with a full set of reconditioned and new parts.

Finally, we aim to carry small stock of our pre-owned Suffolk cars, when possible. We pick and choose to resell only the finest examples, and all cars come fully prepared to the best standards, with works guarantees, and ready to drive away. Many of our cars carry historic registration, so that they can also be exported worldwide.

When we build you a Suffolk SS100, we build the car to your exact specification, so that when you order a car, you can choose from an infinite number of paint and trim combinations, as well as a wide range of optional equipment and special order items, so that your car is truly one of a kind.

The Suffolk SS100 is the ideal classic car, combining the authenticity of a 1930s Jaguar sports car, with modern engineering and technology, to provide the most exhilarating driving experience.

The coachwork and visual appearance is the completely accurate to the 1937 SS Jaguar 100 but under the bonnet lies something rather different and more reliable than the 1930s equipment.

An especially designed and meticulously-built MIG welded, box section, steel chassis, carries full Jaguar running gear and mechanicals. A 4.2 litre XK twin cam straight-6 engine, servo, assisted disc brakes, rack and pinion steering and adjustable coil-over suspension. This gives the Suffolk SS100 an output range of 200-300bhp, combined with very a modern performance and handling ability that belies its classic appearance.

The car can be specified in both left hand drive or right hand drive, and can be ordered with a manual or automatic transmission.

Standard Equipment:

  • Standard or metallic paintwork colours
  • 18″ 72 spoke silver wire wheels (colours optional)
  • Black mohair hood, side screens, tonneau cover and hood bag (colours optional)
  • Folding windscreen with aeroscreens
  • Handmade leather trim and Wilton carpeting in choice of colour
  • Trimmed lockable compartment with toolkit, wheel hammer and jack
  • Moto-Lita wood rim steering wheel in 16″ or 15″
  • Luggage rack in stainless steel
  • 4235cc Jaguar XK engine – remanufactured to as new condition
  • 4-speed all synchromesh gearbox with overdrive (5 speed or automatic optional)
  • Electronic ignition
  • Stainless steel exhaust system

Optional Extras

Option List 1

  • Reproduction Lucas QK596 10.5 Headlamps
  • Reproduction Lucas QK596 7″ Driving Lamps
  • Centre Lucas 9″ Flamethrower Spotlamp (not with QK596 Driving Lamps)
  • Chrome Badge Bar and 3 buckles (badges optional by order)
  • Louvred aluminium front valance in place of GRP valance
  • Desmo style leaper mounted on radiator cap base
  • Jaguar Leaper 8″ mounted on bone and base
  • Prince Michael Mascot mounted on bone and base
  • Wing rivets to replicate original cars
  • Chrome wire wheels
  • 2 enamel Union Jack flag badges mounted on rear bonnet (other nationalities by order)
  • Driver side mounted chrome search light below windscreen pillar
  • Large 17″ original style black steering wheel
  • Removable radio and speaker system in cockpit
  • Stopwatches mounted on dashboard
  • Smooth/crackle black painted or leather trimmed dashboard
  • “SS” logo engraved steering wheel centre
  • Hazard warning light system

Engine & Performance

  • Option for 3.4 or 3.8 engine to customer preference
  • High performance 4.2 engine upgrade (250bhp est.)
  • 5 Speed Tremec gearbox
  • Automated transmission
  • Stainless steel exhaust manifolds
  • Delete rear silencer for louder exhaust
  • Power-lock (LSD) Differential
  • Prince Michael Mascot mounted on bone and base
  • Wing rivets to replicate original cars
  • Chrome wire wheels
  • 2 enamel Union Jack flag badges mounted on rear bonnet (other nationalities by order)
  • Driver side mounted chrome search light below windscreen pillar
  • Large 17″ original style black steering wheel
  • Removable radio and speaker system in cockpit
  • Stopwatches mounted on dashboard
  • Smooth/crackle black painted or leather trimmed dashboard
  • “SS” logo engraved steering wheel centre
  • Hazard warning light system

Suffolk Sportscars LTD offers a 12 month guarantee against the specific failure of any mechanical part on all of our Suffolk cars. Cars requiring labour as part of their 12 month guarantee can be returned to our works at the customer’s cost, so that the repair can be carried out for free. We will supply replacement parts on an exchange basis only.

We also offer a 10 year guarantee against corrosion of the chassis or bodywork (UK only).

We have exported completed cars to most European countries and also to the USA, Canada, South Africa, Australia and New Zealand.

Catalytic converters can be fitted where local regulations require.

You can see all the stages and assembly procedures to complete one of our cars. Our Build Manual fully explains everything you need to know to help you decide if you would like to take on this fantastic project.

If you would like to take on the rewarding challenge of building your own car at home, we are able to provide a complete set of parts, down to the last nut and bolt. Our self-build project eliminates common restoration problems such as unforeseen costs, unavailable parts and specialist mechanical processes. Our self-build customers have the reassurance of agreed costs in advance and parts are supplied new, or reconditioned and warranted, from us. In addition our self-build customers benefit from technical advice from our team.

You are welcome to download our complete Customer Build Manual for free by filling in the form below.

We ask for an email address only so we can keep track of who has downloaded the manual. However we will not add you to our mailing list, unless you specifically would like to receive our quarterly newsletter by clicking here <mailing list link>If you would like more information please email us at; or call us.

Download pdf
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Delivery 1

We would typically prepare all items to enable the ‘4 corners’ of a chassis to be assembled. This would include powder coated chassis plus all brakes, suspension, steering, front and rear hubs plus a pre-assembed rear axle assembly, fuel tank, radiator hoop and stays.

Delivery 2

You would receive the reconditioned XK engine, gearbox, overdrive, propshaft, SU carburettors and inlet manifold, stainless steel exhaust system, radiator and road wheels.

Delivery 3

You would receive the prepared body (can be supplied painted) and a large number of assembly parts including pre-cut floorboards, wiring loom and ancillaries.

Delivery 4

Would comprise the windscreen, hood frame, weather gear, seats, interior, brightwork, lamp bar, headlamps and final components.

All deliveries are at customers calling; there is no prescribed timescale, and we have had some customers who have completed their assembly in as little as 6 months whereas some have taken over 2 years when choosing to do it as a slow and steady project.

The following is a typical short guide to the assembly procedures:

  1. Chassis to be sited on 4 axle stands in a garage or workshop.
  2. Fit into chassis the 4 special Metalastic bushes that carry the top and bottom differential mounting plates and secure with Loctite.
  3. Fit into chassis (using the Suffolk differential mounting plates) the sub-assembly unit of rear driveshafts; lower arms; outer hubs; inboard disc brakes; differential unit (note: This unit can be completely built by Suffolk prior to delivery of the chassis enabling the customer to fit ‘the back end’ as a single operation).
  4. Fit the 2 rear tie bars with their special bushes and rose joints.
  5. Fit the 4 spring coils over the shock absorber units of the rear suspension.
  6. Build up the front end of the chassis using the upper and lower suspension wishbones, uprights, brake discs, bearings, and hubs.
  7. Fit 2 spring coils over the shock absorbers and install.
  8. Fit front brake calipers to the uprights.
  9. Fit steering rack to chassis using 3 special polyurethane bushes.
  10. Fit brake and clutch pedals to chassis on pedal shaft.
  11. Fit brake servo and master cylinder to mounting plate on chassis.
  12. Fit 3/16 cupronickel brake lines to inside of the offside chassis rail using 12 clips (4-way connector from servo to brake light hydraulic switch and to individual front calipers, 3 way connector from servo to individual rear calipers).
  13. Install 2 front brake flexi hoses between brake lines and calipers.
  14. Fit fuel tank, contents sender unit and fuel pump to chassis.
  15. Fit 5/16 copper fuel line to chassis (leading from tank to offside of engine compartment) with 7 clips.
  16. Fit engine mountings
  17. Fit bush to gearbox
  18. Using an engine crane (included with engine delivery) install engine and gearbox as one unit (less carburettors and exhaust) on 3 mounting points.
  19. Install Suffolk modified propshaft.
  20. Install radiator mounting hoop, aluminium radiator, electric cooling fan, and water hoses..
  21. Fit exhaust manifolds and Suffolk 6 part stainless steel exhaust system.
  22. Fit 4 special splined wheel hubs with wheel nuts and dummy brake drums.
  23. Fit Suffolk SS100 18″ road wheels with Blockley 5.50×18 6ply tyres.
  24. Fit handed L/h and R/h ‘SS’ logo wheel spinners
  25. Drop body onto chassis (lifting assistance provided on delivery)
  26. Install chrome radiator shell onto the mounting hoop
  27. Fit 4 handmade aluminium bonnet panels over engine compartment
  28. Arrange trimming for interior with Suffolk Sportscars, or your nominated trim specialist (we can supply a half trim kit, comprising seats and door cards complete, and remaining leather and carpet to trim the rest of the vehicle.)
  29. Install wiring loom (the correct position and location of terminals is determined by using Suffolk diagrams as shown in the Customer Build Manual)
  30. Install handbrake and handbrake cable
  31. Install floorboard set, transmission and prop shaft tunnels
  32. Fit seat runners
  33. Fit Jaguar engine with all operational ancillaries: coil, distributor, alternator, carburettors, manifolds etc.
  34. Fit 4 bonnet catches to the bonnet including 4 hold down fasteners to chassis rail
  35. Fit windscreen wiper spindles
  36. Install instruments & switches into predrilled dashboard
  37. Fit hood mountings & rear hood rests
  38. Fit steering column & indicator stalk
  39. Fit carpets & door linings
  40. Fit door locks & latches
  41. Fit windscreen & mirrors
  42. Fit hood frame & mohair hood
  43. Fit dummy fuel tank vent
  44. Fit spare wheel to chassis mounting
  45. Fit lamp bar, front valance & starting handle eye
  46. Fit radiator cap & badge
  47. Fit steering wheel & boss
  48. Fit headlights, front lamps, rear lamps, side lights & indicators
  49. Fit tonneau cover & hood bag
  50. Fit rear view mirror
  51. Check ALL fluid levels carefully before starting engine.
  52. Fit battery and turn ignition on
  53. BEFORE DRIVING: Check oil pressure; water temperature; brake pedal pressure .
  54. Arrange MOT test.
Body Type2 Seater Sports
Number Of Doors2
DesignerWilliam Lyons
Dimensions and Weights
Track (front)137054
Track (rear)137054
Ground Clearance1405.5
Kerb Weight1193 kg2625 lb
Weight Distribution48F 52R
Fuel Tank Capacity64L14 UK Gal, 16 US Gal
Engine Capacity4.2 – 4235cc
Engine Manufacturer Jaguar
Engine Code
CylindersStraight 6
Bore X Stroke92.07 x 106mm / 3.6 x 4.17 inches
Valve GearDouble overhead camshaft (DOHC), 2 valves per cylinder, 13 valves in total
Design MIG welded closed box section steel chassis made from 150x30x3mm mild steel with mountings for Jaguar XJ mechanicals, specifically designed for the SS100
Engine PositionFront mid-engine
Engine LayoutLongitudinal
Drive WheelsRear wheel drive
SteeringJaguar rack and pinion steering (LHD or RHD)
Turns Lock-to-lock2.5
Turning Circle 13m
Front SuspensionJaguar dual unequal length wishbones with adjustable torsion coil over dampers
Rear Suspension Jaguar independent real suspension with 4 adjustable coil over damper units, rose jointed tie bars
Wheel Size Front5j x 18
Wheel Size Rear5j x 18
Tyres FrontBlockley high performance radial A6C 5.50X18 tyres with tubes
Tyres RearBlockley high performance radial A6C 5.50X18 tyres with tubes
Brakes F/RHydraulic – 4 piston callipers (F) and 2 piston callipers with cable mechanical handbrake (R)
Front Brake Diameter280mm vented disc
Rear Brake Diameter265mm solid disc
GearboxJaguar all synchromesh 4-speed manual with overdrive – 5 speed manual and automatic optional
Top Gear Ratio1:1
AxleJaguar Salisbury 4HA IRS differential mounted on bespoke brackets and metalastic bushes. Inbord rear discs
Final Drive Ratio3.54:1 – other rations available. Open or Powerlock type
Bodyworks & Interior Fittings
Body FittingsChromed brass SS100 grille, Stainless type 40 lights, with mesh headlamp covers, mounted on chrome ‘100’ lamp bar with stays on louvred front valance, teardrop chrome side lamp and indicator fittings on front wings. 4-piece louvred aluminium bonnet with stainless steel hinges, and 4 chrome ripault fasteners. Chromed folding SS100 laminated windscreen, mounted on bulkhead, with 2 glass aeroscreens and 2 oval side mirrors, chrome rear view mirror on bulkhead Hood in black mohair, hood bag, tonneau cover and side screens, chrome flip up fuel filler cap, dummy fuel tank vent, 2 Owl’s eye rear light units mounted on number plate brackets, spare wheel and luggage rack
Interior Fittings Pair of handmade SS100 bucket seats, with improved comfort and space, trimmed in finest leather, Transmission tunnel, footwells, rear shelf and cabin trimmed in Wilton carpet with leather gearstick and handbrake gaiters, fitted lap and shoulder seatbelts. Lockable rear compartments trimmed in Wilton carpet Dashboard painted in body colour and fitted with silver SS 120MPH speedometer, tachometer, oil pressure, water temperature gauge, ammeter and fuel gauge, plus key and starter, Jaguar 3 position headlamp switch, and pull switches for overdrive, wipers and heater control. Heater hidden under dashboard, separate switch panel with rear fog light, 12v accessory socket and manual choke. Indicators, horn, headlamp beam control and flasher on stalk mounted to steering column behind dash.