40th Anniversary


Sterling Dimensions:  (14.7 Long X  5.7" Wide X  3.8" Tall)
weight: 1900 LBs,  weight distribution: F&R 43/57

Sterling Body/Chassis Kit Pricing

Sterling Sports Cars is a Registered Trademark of  Sterling Sports Cars LLC. 
Content and designs are Copyright protected  

For our customers we create a personal blog web page for them. While we build your car or chassis, you can  then be part of the build action.  (We will soon make a few of these web pages available for public viewing) 


We crate and pack kit car bodies, chassis & parts.
for world wide shipping.

Sterling Dimensions (174" Long X 67.5" Wide X 42.5' Tall) weight 1900lbs, distribution F&R 45/55

(( Build your car from all new modern parts. ))

WARNING: read this, knowledge is power.
Sterling RX sports car.
Power-to-weight ratio is the true measure of actual performance of any sports car. Large V8s need heavier transaxles, larger cooling systems and oversized braking systems. This extra weight and higher center of gravity causes numerous handling obstacles you can never overcome. Modern high tech V6, 4 cylinder, and boxer engines available today can put out 300HP to 700HP at the wheels with torque ratings over 400. The Sterling RX naturally out performs with its great combination of weight to power ratio when using the Subaru 2.5 EJ25 boxer engine. The low center of gravity and its light weight (chassis system) make acceleration and cornering exhilarating. Track car and street car become one. The Sterling RX with its redefined body and new performance chassis is the perfect match of style and performance. 

Our (Chassis systems) are developed by computer aided design. We test and develop numerous design options and configurations before any tubing is cut. All of our chassis and part assemblies are made in complex fixtures to assure quality. This is how we are able to develop unlimited chassis variations based on an original tested concept.

( NEW modern parts, no need for an old donor car )

Perfect match of style and performance.

The new Sterling RX still has the classic shape but with modern style and engineering. Thick composite body with a double wall structure built into the body during molding.  Carbon fiber reenforced at stress points.  Some areas are 3/8" think at bolt points.  The new targa top has a removable hard top. There are now 25 new customizable features to make your Sterling super car your own.

Some Assembly Required

B03 Summer 2011
The Sterling RX Supercar kit is a modern kit developed to be built in your own garage with basic tools. What makes this chassis kit unique is there is no need for a donor car. The frame and suspension were developed together to work in harmony on the track or on the street. The RX kit gives you everything you need to build your car, except a select number of off the shelf parts which you choose to fit your personal style.
The chassis is a full rolling kit with suspension included and a the beautifully sculpted composite body. There is a vast array of suspension, interior, and trim parts that are all included. The major parts including the engine, transaxle, and fuel tank are available from a number of select parts suppliers listed at a very economical price.

Here’s a list of what comes standard in the Sterling Supercar kit.
o Body: Composite body panels are hand laid 3/16" laminate made with virgin resin and a sandable black gel coat. Reinforced double wall inner panels and nose support areas, carbon fiber reinforce stress points. All parts are pre-trimmed and hand fit by skilled craftsman.
o Body kit includes rigid one part main body, DOT glass windshield, and side glass and rear glass kit.
o Fully enclosed top with canopy including removable roof panel and carbon fiber reinforced window pillars with cormat layer in mounting locations.
o Two hood options
o Nose under section panel, and RH, LH lower RX style side panels.
o Rear window tunnel with DOT glass window
o Rear molded lower panel, engine cover panel
o Under body rear support structure, factory installed
o Top hinge mechanism, stamped steel with welded tube and nylon bushings, sleeves. Gas strut supports, bronze bushing hinges for hood.
o Includes secondary body fasteners assembly.
Nuts bolts and washers, Rubber body seal,
Rear window tunnel push-on rubber trim
Adhesive backed and foam side glass weather-strip
Top canopy D shape rubber trim gasket.
Body mount fasteners

o Frame: Years of computer design software including ProEngineer and Solidworks were used to design an ultra-rigid space frame. Materials include high strength mild-carbon steel Mig-welded and Tig-welded in our special jigs. This contributes to the lowest center of gravity, with highest strength. Left-hand and right-hand drive configuration available.
o Welded mount points for ready-to-bolt-on engine and transmission, pedal box tube, radiator, steering gear, and suspension components included
o Safety designed Integral side impact beams concealed with a triangulated roll cage that’s contoured to the shape of the body to offer high rigidity.
o Steel surround foot box and front/rear crumple zone areas.
o Lower steel floor pans add much more headroom in cockpit and flat bottom floor design aides aero/downforce,
o Mounts installed for rear 4 link suspension including mounts for coil over shocks.
Mounts installed for full front a-arms included in kit, along with the full disc brake package.

Front & Rear Suspension System: High quality Carrera brand shocks and coil-over kits with complete upper and lower control arms and rod links in front and rear. We include everything: all new suspension components, adapters, brackets and hardware. Rear 930 Stub axle shafts are included.
Front complete (A-arm kit) and complete rear four link arm kit and hardware
o Front damper kit (pair), shocks (QA-1 adjustable coil over), machined aluminum, threaded with spacers, kit, coil-over spanner wrenches, fasteners and, aluma coated 2.5" ID springs
o Rear 4 link suspension and all hardware
o Rear damper kit (pair), shocks (QA-1 adjustable coil over), machined aluminum, threaded with spacers, kit, coil-over spanner wrenches, fasteners and, aluma coated 2.5" ID springs included
o Rear CV components, including CV Porsche 930 stub axels, and lug nuts
o Rear inner and outer bearing kit with steel pacers, bearing caps, axel nut o-ring and gasket kit.
Rod Ends with Teflon/Kevlar races 10LH and 10RH,
Jam nuts, 5/8" adjusting rod tubes 10, mounting hardware, with locking nuts
Subaru transmission mount and hardware pre-installed.

Brakes and Steering kit: High performance manual steering rack with tie rod end kit, fasteners, bushings.
Front brakes are large 11" rotors with GM calipers, mounting brackets, brake pads, and installation hardware.
o Disc brake rotors with ½"-20 wheel studs 5 on 4.5" bolt center (lug pattern).
o Brake hose kit
o Competition GM spindles
o Upper and lower spindle bearings and bushings
o Rear disc brake and GM caliper kit
o Steering rack mounting hardware, Left-hand and right-hand drive configuration available.
o Tie-rod end kit, Steering rack bushings and sleeves
o Tilton pedal kit, brake and clutch
Rear disc brake kit with emergency brake cables and hardware brake
Manual rack and pinion steering rack, rubber mounts and bolts

Additional standard parts include
o Assembly Manual: detailing assembly of kit and additional parts sourcing
Electrical Assembly: wire kit is included with a vast array of electrical parts, along with a full chassis wiring harness to make the challenging electrical work easier to manage.
18 circuit wiring harness is divided and bagged into a sub wire all electrical hardware.
relays, sockets, wire loom and serrated harness instructions
Interior Accessories: interior including, sport seats, rear bulkhead window tunnel, dash assembly and:
Complete Dash with gauge pod, and center console
o Sport Seats, High-back w/side bolsters, and hardware, black covers
o Adjustable seat tracks with hardware
o Glass windshield - DOT safety glass, with top tint and black boarder.
o Rear interior window - DOT safety glass, cockpit rubber gaskets, weather strip
o Side windows, glass DOT power windows
o Side window hardware and rubber trim
o Top canopy rubber gasket kit
o Windshield wiper assembly parts, motor included, reservoir, wiper arms, blades, linkage, tubing, wiper switch fasteners and brackets.

Parts Needed to Complete Sterling RX sports car
The Sterling RX kit gives you everything you need to build your car, except for select running gear parts taken from a Subaru Boxer engine: EJ22 or EJ25: 2212cc to 2457cc, 165-320 hp found in most models 1989-to present WRX STI, Impreza, and Legacy, and Subaru manual trans axle. Purchase the engines new or rebuilt from a number of shops and reconditioning shops. Many other engine options can be used. To obtain the lowest center of gravity and power to weight ratio, the Subaru boxer engines are the best option for the track. Turbocharged versions are available with hp ranges up to 560 HP.

Major Components/Parts needed to compete kit:

Engine, computer, and exhaust manifolds, Subaru 1989- to present, see build manual
Radiator w/fans and plastic shroud, radiator hoses, and clamps,
For Subaru transaxle use block off plate adapter and new high performance CV joints

Wiring harness w/engine, throttle control, & ignition sections, so it can be simplified.
Wheels and tire recommended size: 17" 225/45R17 and 17" 275/40R17
Gauge kit, steering column, Idid-it brand or Flaming River Brand steering columns,
Metal brake lines, gas tank, filler cap

Tail lights, head lights, and side view mirrors
Seat belts, shifter, steering wheel
Aluminum sheet 6061 series with 1/8" long rivets, and 3/16"long rivets: Aluminum sheet for engine shrouds, interior cockpit, foot well box, block-off plates, patch covers, and engine bay aluminum paneling.
Interior fabric and carpet, paint

Estimated cost for additional parts: $3200.00 - $4700.00 for new parts.
We are also a dealer for all the major brands:
Speed Hut gauges, Idid-it brand or Flaming River Brand steering columns, Grant steering wheels, Grote lighting brand, Summit Racing, or Jegs






Sterling RX Specifications

Dry weight structure 1890 lbs.
Wt. Dist (F/R) 45/55 (%)
Wheelbase 96.5"
Overall length 174"
Track (F/R) 61.5"
Overall height 42.5"
Overall width 67.5"
Ground clearance 4.5"
Layout mid engine RWD
Frame tubular steel space frame w/alum chassis panels
Roll cage, 6 point w/integrated side impact beams.


Configuration Subaru Boxter option, aluminum block/heads
Displacement 2.0/2.5L
Compression 10.0:1
Electronic fuel injection
Horsepower 215-550 HP


Transaxle Subaru 5-speed or aftermarket
Suspension (F) independent double alum. a-arm w/adj. coil over shocks, (R) 4 link w/adj. coil over shocks
Steering rack and pinion
Brakes 4-wheel disc front, and rear
Wheel range: 17" x 8" to 18" x 9" front wheel and 17" x 9" to 18" x 12" rear wheel
Tires 225/45R17 or 275/40R17 up to 18"

Subaru up to 500HP