| Title | Products |
|---|
| Intake Manifold Plenum | 9 |
| Intake Manifold Spacers | 10 |
| Intake Manifolds | 375 |
| Intake Manifolds - Plenums | 2 |
| Intake Manifolds - Runners | 2 |
| Intake Manifolds and Components | 309 |
| Intake Spacers | 6 |
| Intake Valley Covers | 11 |
| Integra Shocks | 7 |
| Intellitronix | 3 |
| Intercomp | 38 |
| Intercooler Ducting | 29 |
| Intercooler Kits | 184 |
| Intercooler Pipe Kits | 193 |
| Intercooler Sprayers | 1 |
| Intercoolers | 400 |
| Intercoolers and Heat Exchangers | 21 |
| Interior Accessories | 679 |
| Interior and Accessories | 793 |
| Interior Light Assemblies | 3 |
| Interior Lighting | 6 |
| Interior Lights and Components | 3 |
| Interior Trim | 8 |
| Internal Support Coils | 2 |
| Invidia | 241 |
| ION Wheels | 56 |
| ISC Suspension | 52 |
| Isky Cams | 136 |
| ISR Performance | 156 |
| J&L | 166 |
| J-w Performance | 31 |
| Jack Dirt Wings and Pads | 1 |
| Jack Stands | 9 |
| Jackets - Leather | 0 |
| Jackets - Textile | 2 |
| Jacks | 20 |
| Jacobs Ladder Fasteners | 0 |
| Jam Nut | 0 |
| Jaz | 113 |
| JBA | 76 |
| Jba Performance Exhaust | 19 |
| JE Pistons | 359 |
| Jerico | 6 |
| Jerseys | 0 |
| Jesel | 64 |
| Jet Performance | 35 |
| Jiffy-tite | 1 |
| JKS Manufacturing | 106 |
| JMS | 15 |
| Joes Racing Products | 143 |
| Joes Racing Products | 0 |
| Jones Racing Products | 43 |
| Jp Performance | 30 |
| K&N Engineering | 169 |
| K-Members and Components | 12 |
| K.s.e. Racing | 18 |
| K1 Racegear | 171 |
| K1 Technologies | 16 |
| Kansei | 33 |
| Kartboy | 28 |
| Kb Performance Pistons | 81 |
| KC HiLiTES | 144 |
| Keep It Clean | 2 |
| Keizer Aluminum Wheels, Inc. | 47 |
| Kentrol | 58 |
| Kevko Oil Pans & Components | 31 |
| Key Chains | 0 |
| Keychains | 0 |
| Keyless Ignition Systems | 1 |
| Kickstands | 0 |
| Killer B Motorsport | 31 |
| King Bearings | 111 |
| King Engine Bearings | 363 |
| King Pin Stud | 1 |
| King Pins and Components | 4 |
| King Racing Products | 43 |
| King Shocks | 163 |
| Kinser Air Filters | 4 |
| Kinsler | 15 |
| Kirkey | 101 |
| Kleinn Air Horns | 59 |
| Klotz Synthetic Lubricants | 50 |
| Kluhsman Racing Products | 6 |
| Knee and Elbow Pads | 1 |
| Knee Pads | 0 |
| KONI | 546 |
| Koni Shocks | 70 |
| Konig | 176 |
| Kooks Headers | 175 |
| Kool Mat | 2 |
| Koyo | 110 |
| KraftWerks | 23 |
| Krc Power Steering | 39 |
| KW | 211 |
| KYB | 0 |
| Kyb Shocks | 3 |
| Ladder Bar Crossmembers | 5 |
| Ladder Bar Mounts and Brackets | 0 |
| Ladder Bars | 8 |
| Ladder Racks | 6 |
