| Title | Products |
|---|
| Ididit | 117 |
| Idler Arms | 3 |
| Idler Pulley Brackets | 2 |
| Idler Pulleys | 4 |
| Ignition | 141 |
| Ignition Box Mounts | 0 |
| Ignition Boxes and Components | 95 |
| Ignition Boxes and Controllers | 67 |
| Ignition Coil Brackets | 9 |
| Ignition Coil Covers | 4 |
| Ignition Coil Selectors and Firewall Feed Throughs | 1 |
| Ignition Coil Wires | 0 |
| Ignition Coils | 110 |
| Ignition Components | 309 |
| Ignition Testers | 2 |
| Ignition Timing Chips | 1 |
| Ignition Timing Controllers | 7 |
| Ignition Tune-Up Kits | 1 |
| Ignition Wiring Harnesses | 13 |
| Ignitions and Electrical | 1246 |
| Impact Racing | 214 |
| Implements | 0 |
| In-Line Modules | 53 |
| Individual Gauges | 619 |
| Inductive Pickups | 1 |
| Industrial Injection | 35 |
| Injection Pump Components | 9 |
| Injection Pumps & Controllers | 46 |
| Injector Dynamics | 166 |
| Injen | 864 |
| Inner Fenders | 10 |
| Innovate Motorsports | 71 |
| Innovative Mounts | 154 |
| Intake Elbows | 13 |
| Intake Gaskets | 4 |
| Intake Manifold Components | 4 |
| Intake Manifold Fastener Kits | 4 |
| Intake Manifold Gaskets | 2 |
| Intake Manifold Plenum | 11 |
| Intake Manifold Spacers | 8 |
| Intake Manifolds | 366 |
| Intake Manifolds - Plenums | 2 |
| Intake Manifolds - Runners | 2 |
| Intake Manifolds and Components | 303 |
| Intake Spacers | 6 |
| Intake Valley Covers | 11 |
| Integra Shocks | 7 |
| Intellitronix | 4 |
| Intercomp | 36 |
| Intercooler Ducting | 25 |
| Intercooler Kits | 159 |
| Intercooler Pipe Kits | 167 |
| Intercooler Sprayers | 1 |
| Intercoolers | 347 |
| Intercoolers and Heat Exchangers | 21 |
| Interior Accessories | 573 |
| Interior and Accessories | 593 |
| Interior Lighting | 6 |
| Interior Trim | 8 |
| Internal Support Coils | 1 |
| Invidia | 216 |
| ION Wheels | 52 |
| ISC Suspension | 42 |
| Isky Cams | 129 |
| ISR Performance | 126 |
| J&L | 156 |
| J-w Performance | 28 |
| Jack Dirt Wings and Pads | 1 |
| Jack Stands | 6 |
| Jackets - Leather | 0 |
| Jackets - Textile | 2 |
| Jacks | 14 |
| Jacobs Ladder Fasteners | 0 |
| Jam Nut | 0 |
| Jaz | 113 |
| JBA | 75 |
| Jba Performance Exhaust | 32 |
| JE Pistons | 375 |
| Jerico | 7 |
| Jerseys | 0 |
| Jesel | 63 |
| Jet Performance | 35 |
| Jiffy-tite | 1 |
| JKS Manufacturing | 87 |
| JMS | 15 |
| Joes Racing Products | 138 |
| Joes Racing Products | 0 |
| Jones Racing Products | 40 |
| Jp Performance | 30 |
| K&N Engineering | 81 |
| K-Members and Components | 9 |
| K.s.e. Racing | 18 |
| K1 Racegear | 161 |
| K1 Technologies | 17 |
| Kansei | 21 |
| Kartboy | 27 |
| Kb Performance Pistons | 81 |
| KC HiLiTES | 156 |
| Keep It Clean | 3 |
| Keizer Aluminum Wheels, Inc. | 46 |
