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AFT Single Exhaust Kawasaki KX450F Down Pipe 2016-2019
4 min read
Table of Contents
Congratulations, you have purchased the finest exhaust system available for your motorcycle. Your V&H “Race Shop” exhaust is designed and crafted for performance, quality, and style. Please follow the instructions below, check exhaust system for missing or damaged parts, and if you need assistance, please contact our technical support line (317) 852-9057.
FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE
| Item | Part No. | Description | Qty. |
| 1 | K320FB | Exhaust Assembly | 1 |
| 2 | C902 | Grommet Spacer | 1 |
| 3 | A245HW | ½” ID Rubber Grommet | 1 |
| 4 | 1322-P | Muffler Bracket Black | 1 |
| 5 | 1140357 | M8 Flat Washer | 3 |
| 6 | A145HW | M8 -1.25 Nylon Lock Nut | 1 |
| 7 | K120ST | Muffler Bracket Spacer | 1 |
| 8 | Y125ST | Muffler Bracket Spacer | 2 |
| 9 | 92461A400 | M8 – 1.25 Flange Nut | 1 |
| 10 | 1140355 | M6 Flat Washer | 3 |
| 11 | A371HW | M6 x 1.0 – 30mm BHCS | 2 |
| 12 | A876HW | M8 x 1.25 – 45mm FHCS | 1 |
| 13 | 0141333 | M8 x 1.25 – 25mm BHCS | 1 |
| 14 | A449HW | M8 x 1.25 – 30mm SHCS | 1 |
STOCK EXHAUST SYSTEM REMOVAL #
- Remove the OEM exhaust system entirely.
- Remove the right side sub frame bolt and the two master cylinder screws.
- Insert both the grommet (Part No. A245HW) and the grommet spacer (Part No. C902) into the circular hole on muffler bracket.
- Fasten the muffler bracket to the master cylinder and sub frame mounting locations using the supplied M8 x 45mm flathead screw (Part No. A876HW), M6 x 30mm screws (Part No. A371HW), including the M6 washers (Part No. 1440355), 6mm spacers (Part No. K120ST) and 8mm spacer (Part No. Y125ST).
Ref. Figure 1 Note: Using medium strength Loctite (not supplied), torque to factory specs. - Install the exhaust header assembly using the stock flange nuts. Ref. Figure 2
- Spread the muffler tabs slightly to go over grommet previously installed on the muffler bracket. Secure the exhaust to muffler bracket using the supplied M8 x 30mm bolt (Part No. A449HW), M8 flat washers (Part No.1140357), and M8 locknut (Part No. A145HW). Note: Torque to 18 ft./lbs. Ref. Figure 3
- Install the supplied M8 x 25mm screw (Part No. 0141333), M8 flat washer (Part No. 1140357), and M8 flange nut (Part No. 92461A400) through the mid pipe tab to fasten against muffler bracket. Note: Torque to 18 ft./lbs. Ref. Figure 4
- If necessary to clear exhaust pipe, trim tab off right side foot peg mount. Ref. Figure 5
- Clean all fingerprints from the exhaust using a contact cleaner (or other non-flammable cleaner). Fingerprints will leave stains on the pipe once the motorcycle is started.
- You are now ready to start your motorcycle.
- After initial ride, retorque all hardware as needed.
EXHAUST CARE #
- When installing a new set of stainless pipes, make sure your hands are clean and free of oil. After installation, thoroughly clean pipes with a soft cloth and cleaning solvent that will leave no residue (acetone glass cleaner, alcohol, etc.) before starting the Motorcycle.
- It is considered normal for stainless steel exhaust systems to discolor due to heat.
- High performance engine tuning utilizing a dyno will likely result in severe discoloration.
- Avoid long periods of idling as this can cause discoloration. Intake leaks can cause the engine to run lean and overheat, this could lead to discoloration.
- Make sure there are no exhaust leaks at the junction of the exhaust pipes and cylinder head. We recommend replacing gaskets if they are worn.
Emissions Notice: #
In California, in order to meet Air Resources Board emissions requirements, certain aftermarket part applications have been identified as replacements, and others have received ARB Executive Orders. All other emissions related aftermarket parts are for competition use only. A list of replacement parts and EO parts, and corresponding fitment is provided at vanceandhines.com/California.
Warranty:
All Vance & Hines products are warranted against defects in material and workmanship for a period of 30 days. This warranty does not cover discoloration or rust. This warranty shall be limited to the repair or replacement of the product, which may be proven defective under normal use.
Vance & Hines will not warranty any system that has been abused, misused, improperly installed or modified.
Dealers or distributors are not authorized to make dispositions binding upon Vance & Hines. Vance & Hines will not be responsible for any labor charges incurred in removing or replacing any system under warranty. A return authorization number and a copy of the original purchase invoice must accompany all returns. Parts returned without a return authorization may be refused.