Honda Civic EP3 K24 Endurance Spec

2005 Honda Civic EP3 K24 Endurance spec race car for sale. I purchased the car in 2018 as a road car, and converted the car into Civic Cup spec, before upgrading it into an Endurance car. The car most recently competed in the 2022 (5 rounds) and 2023 (2 rounds) 750MC Club Enduro, within class B (240bhp/ton), where it won a round of Club Enduro Clubman Cup in 2022. It has been dry stored since and has just undergone a pre-sale inspection and recommission with Motion Motorsport, at a cost of £2090.

The original engine was replaced with a K24A midway through 2022, producing 275bhp (dyno’d on 17/11/25) and a near flat power curve from 7000-8200RPM (dyno graph available on request). The engine is capable of more power, but was capped to keep it within championship regulations. It was refreshed with a new K20 oil pump, water pump, timing chain and guides at the time of install.

The gearbox was rebuilt and upgraded by One Day Motorsport in March 2023, utilising their custom short gear ratio kit. This suits the K24A perfectly, keeping the engine in it’s powerband between gear changes. It is geared for a top speed of 130MPH, which is ideal for all UK circuit tracks. The gearbox is fitted with an Mfactory 1.5 way plated differential.

The car has a full weld in roll cage (Civic Cup spec), fitted and sprayed Grey by SW Motorsports. The original front windscreen has been replaced with a heated windscreen and original heater/blower removed for weight saving. Polycarbonate windows are fitted elsewhere. The car weighs 1115kg without fuel.

It has a 95L Race Safe fuel cell (bladder type), capable of 120+ minutes racing without re-fuelling. This is fitted in place of the original fuel tank, keeping the mass low and central, unlike some of the ‘auxiliary range extender’ tanks fitted to other endurance EP3’s. The original fuel system has been removed entirely, and replaced with a closed loop system. A breathable Tuff Jug will be included in the sale, capable of adding 20L in approximately 45 seconds.

The front brakes have been upgraded to AP Racing 5000 series calipers, 330mm floating discs, and Pagid RSL29 pads. This setup offers fantastic stopping power and no brake fade whatsoever. Brake bias can be adjusted via the AP Racing brake proportioning valve.

This would make a great race car in 750MC Club Enduro and Roadsports, BRSCC Supersport Endurance Cup and Clubsport Trophy, and is also ideally suited to class A of Honda Racing Championship.

The car can also come with a comprehensive spares package, available by separate negotiation.

Selling as I’m now racing sports prototype cars.

Collection from Lutterworth, Leicestershire.

The entire spec is as follows:
Engine
K24A
Skunk 2 Tuner Series Drop in Camshafts
K20 oil pump
K20 sump with Clockwise Motion drop in baffle
Tegiwa exhaust manifold
Tegiwa 2.75″ exhaust
Skunk2 Ultra Street manifold
Tegiwa 70mm throttle body
Tegiwa carbon air intake
Setrab 25 row oil cooler
Tegiwa radiator
Hondata KPro ECU

Fuel system
Race Safe bladder type fuel cell (95L)
Bosch 044 HP fuel pump
Facet Red Top LP fuel pump
Sytec Fuel Pressure Regulator
Sytec Bullet Fuel Filter
PTFE Braided hoses
Clockwise Motion billet fuel rail
RDX 410cc fuel injectors

Gearbox
Mfactory plated LSD 1/1.5 way differential
One Day Motorsport custom short ratio gear set
Exedy OEM clutch

Brakes
AP Racing 5000 front calipers
330mm floating front discs
Pagid RSL29 Front pads
EBC Orange rear pads
AP Racing Brake bias adjuster
Braided hoses throughout

Suspension
YSR Premium Competition Inverted Coilovers
Area Motorsport castor increase top mounts
Spherical bearings throughout
Tegiwa roll centre correction ball joints
Upaclick rear LCA’s
JDM Front ARB
Tegiwa 28mm Rear ARB
Rack Raiser
Delrin steering rack slider
Hardrace adjustable track rods

Wheels/Tyres
x4 Forge ZF1 17×9 ET30 Wheels with Yokohama A052 255/40/17
x4 Rota Torque 17×8 ET35 with Yokohama 225/45/17

Chassis
SW Motorsport – CDS weld in cage
Powerlite PS-20 Lithium Ion battery
Upaclick front splitter
Tegiwa rear wing
Corbeau Revenge bucket seat
Corebau 6 point harness
Lifeline Fire extinguisher (service due)
Electric Heated Windscreen
Polycarbonate windows throughout
Personal steering wheel fitted to 75mm steering wheel spacer.

Other
Racelogic Vbox Lite