Dedication & Durability
Rapp Fabricating, Inc. is dedicated to building powerful and durable headers. We offer a wide variety of pipes for every karter's needs.
We look forward to doing business with you! Please feel free to contact us. We are constantly adding to our inventory and will be happy to answer any questions you might have.
General Guidelines
| - | Adding length or going to a smaller interior diameter (I.D.) of a header pipe will usually provide more torque/bottom end to the engine. |
| - | The most popular length of header pipes are 18" and 20". However, we can make pipes in a variety of length. |
Animal/Raptor Guidelines
| I.D. | Application |
| .840 | Purple Plate / Blue Plate |
| .880 | Purple / Blue |
| .906 | Gold Plate / Stock |
| .930 | Stock |
| .960 | Stock / Modified |
| .990 | Modified / Open (15" & 18" most popular lengths) |
| Loops | Stock |
Honda/Clone Guidelines
| I.D. | Application |
| 3/4 | AKRA Spec |
| .880 | Stock Open Pipe Rule |
| .906 | Stock Open Pipe Rule |
| .930 | Stock Open Pipe Rule |
| .930 BP | Superbox / Builders Preferred Specs |
| .960 | Modified |
| .990 | Modified / Open |
