OP 1780B Sports Big Bore Throttle Body: Dyno and flow bench tested to give the best overall power gain for the 2.4TC engine in street and sports applications. Our 56mm bore throttle body flows almost 20% better than stock. The increased flow and size gives the best overall power improvement and still gives great low end response. Bigger sizes are available for competition use, also. Price includes refundable $50 core fee.

OP 1568 K&N Free Flow Air Intake System: Eliminate the restrictive stock air filter box and fender well baffle chamber. This polished aluminum intake goes from the throttle body to behind the battery area to take in unrestricted air for better power. Has provision for all computer sensors and emission fittings.

OP 1568A Competition-Style K&N Air Intake System: This system is the same configuration as the sports intake, but extends the intake tube into the wheel well area to mount the filter for colder outside intake air.

OP 2400HS 2.4TC Sports Cylinder Head: Mild sports porting and polishing with valve work to optimize mid and upper range power without losing low end torque. Comes with our special stainless steel 6mm performance valves and H.D. valve springs. Comes completely assembled with new seals, retainers, and keepers. Works with stock ecm. Price includes refundable $100 core charge.

OP 1149T Mild Sports 2.4TC Camshaft Set: These are the only cams developed to give a torque and power boost for your 2.4TC engine without needing a modified ecm. They work with the stock OBD2 system to optimize power for street and sports driving. Cams will fit your engine with no modifications and have all the proper p/s drive and OBD2 sensor hardware on them too.

OP 1153T Sports 2.4TC Hydraulic Cam Followers: These are the special 33mm hydraulic cam followers (lifters) that will give extra low end torque and aid high rpm power to optimize the 2.4TC engine's power for reliable high performance use.

OP 1157T Sports 2.4 TC Valve Springs: These conical springs will work with stock retainers to give the 2.4 head the ability to use slightly higher lift cams and are a llittle stiffer rate for high rpm stability. These springs will work with stock and sports cams with no wear problems.

OP 1154T Sports & Racing 2.4 TC Stainless Valves: These are custom made 6mm valves for the 2.4TC engine to be the strongest and best flowing valves for your hard street and performance applications. Their quality allows them to be used for supercharger and turbo usage also where strength and heat resistance is critical. Guides must be modified slightly for use.

OP 1562FT Forged Performance Pistons: These pistons are specially designed by us and made of the highest quality, low expansion aluminum forgings to give you the ultimate in reliability to your highly modified 2.4TC engine. Lightweight tool steel pins and racing rings, plus your choice of compression ratios allows you to get them for regular or turbo and supercharger applications. Available in standard and .020" Oversize bore. Complete set of 4. Inquire for details to suit your engine. Custom applications may cost more.

OP 1530B Sports Power Pulley: Increase the pickup and response of your 2.4TC with our OEM quality crank power pulley. Smaller full damper design gives response and smoothness with less load on on the accessories. Complete with new serpentine belt.

OP 1530D Sports Power Pulley Set: Same quality crank pulley as above plus a larger alternator pulley to give even less drag on the belt system. This setup works fine on heavily-powered stereo cars too, no loss in alternator output.

OP 4519 A/C Eliminator Pulley: This special casting replaces the bracket and air conditioning compressor on 2.4TC engines and uses a stock belt. Remove weight and reduce drag for more power.

OP 1777S Sports Cast Exhaust Manifold: Our flow bench developed manifold is ported and contoured to increase exhaust flow for better horsepower and torque, without the reliability problems of tubular headers. Comes complete with all gaskets, new big bore downpipe and all hardware. Gives nice street power increase. Price includes $50 refundable core charge.

OP 1178 Sports Cat-Back Exhaust System: Free up lost power by installing this 2 1/4" mandrel-bent aluminized cat back pipe which includes a resonator eliminator and a Dynomax super turbo muffler with dual stainless tips & hardware.

OP 1131S Sports 2.4 TC Clutch Assembly: This high quality clutch disk and HD pressure plate fit the '95 2.3 and all 2.4TC engines from '96 and up. Gives better grip and pull through the gears to optimize the power of your stock or modified engine. Flywheel must be resurfaced to install this unit and get maximum gripping power. Cover and disk assembly.

OP 1132S Sports 2.4TC Lightened Flywheel: We specially machine and rebalance these units to give the optimum in weight reduction and freer revving but still keep your launch torque up. Balanced closer than factory specs for high rpm reliability. These come with new factory flywheel bolts too. Exchange item, price includes refundable $50 core charge.