Caterham Cars give the following description of the SV Roadsport Model :
 

The design brief was to create a Seven that had extra interior space making the car more practical for every day use without detracting from the cars timeless aesthetic appeal. And judging by the exemplary reviews and accolades the SV has received from the media, Caterhams engineers have been immensely successful. The increased track and wheelbase bestows this model with enhanced stability and greater road presence.

The end product is a Seven with an increased dimension chassis, offering extra 80mm in length and 110mm in width. And incredibly, the additional size of the car only adds 25 kg to its overall weight compared to the standard vehicles 550kg. This package provides a Caterham Seven that will allow a greater range of people to enjoy Caterham Motoring, giving extra leg room, foot room, elbow room and headspace to this already fantastic sports car.
 

Choosing the specification for your new Seven is a big task as there are plenty of options. Below is what we finally decided on.
 

SPECIFICATION - ROADSPORT 140

SV COCKPIT DIMENSIONS
Overall extra length 80mm
Overall extra width 110mm
Pedal box extra width 55mm
Pedal box extra height 25mm
Windscreen extra height 25mm
Hood extra height 25mm

ENGINE

140: xpower 1.8 litre k series.
16 valve dohc
Maximum power: 140 bhp @ 6750 rpm
Maximum torque: 124 lbsft @ 5000 rpm
0-60 mph: 5.3 secs
Maximum speed: 122 mph
Fuel consumption: 37.6 mpg @ 75 mph

TRANSMISSION

Close Ratio 5 Speed
1st: 3.36:1
2nd: 1.81:1
3rd: 1.26:1
4th: 1.00:1
5th: 0.82:1
Reverse: 3.37:1
Final Drive: 3.92:1

SUSPENSION

Front: adjustable double wishbone with anti roll bar.
Rear: de dion axle located by lower a-frame and upper radius arm

DIMENSIONS

Overall length: 3530mm
Overall width: 1685mm
Overall height: 1015mm

WHEELS AND TYRES

15” 10 spoke hubs in Anthracite with Avon CR500 tyres
195/45 R15 78V maximum load 425 kg

BRAKES

Twin circuit split front/rear with low level warning system.
Discs front and rear. Handbrake operates on rear wheels.

STEERING

Rack And Pinion, 1.93 Turns Lock To Lock

WEIGHT

575 kg as standard spec

555.5 kg at Upper Heyford with no doors, no passenger seat, no toolkit, no roof and 7/8 tank of fuel.

Without Driver :
LF 140.0     RF 127.0    =    267.0 kg on front wheels = 48.1%
LR 146.5     RR 142.0
555.5 kg TOTAL WEIGHT

With Driver :
LF 143.5     RF 148.5    =    292.0 KG on front wheels = 44.6%
LR 174.5     RR 187.5
654.0 kg TOTAL WEIGHT

ADDITIONAL ITEMS ADDED WHEN BEING BUILT

Red starter button
4-point harness
Leather seats
Momo quick release steering wheel
Heater
Metallic paint – Mercedes colour 370 Novaviolett
Bonnet Stripe (and nose ring)
Side screen armrests
Track day roll bar (painted)

UPGRADES COMPLETED TO DATE

Fitted lightweight aluminium rear light cluster supports
Fitted airhorns
Fitted lighter socket
Fitted autocom communications unit
Fitted aeroscreen
Fitted Spa mirrors
Fitted clear lenses to front indicators