AFT SINGLES EXHAUST YAMAHA YZ450F DOWN PIPE 2014-17AFT SINGLES EXHAUST

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

STOCK EXHAUST SYSTEM REMOVAL #

1. Remove the OEM exhaust system entirely.
2. Remove the rear master cylinder mounting screws (two locations).
3. Insert both the rubber grommet and the grommet spacer into the circular hole on the muffler bracket (Part No. 1313-P). Ref. Figure 1
4. Fasten the muffler bracket to the existing mounting holes (two locations) using the supplied M6 button head screws, M6 flat washers, and muffler bracket spacers.  Ref. Figure 2 Note: Using medium strength Loctite(not supplied), torque to factory specs.
5. Install header section #2 (Part No. Y298FB) to the stock mount located in front of the cylinder head. Use the original bolt with the supplied M8 lock nut. Ref. Figure 3 Note: Do not fully tighten yet.
6. Install header section #1 (Part No. Y297FB) to the cylinder head using the stock cylinder head nuts (3) while carefully mating it to header section #2. Ref. Figure 4 Note: Use high-temp anti-seize (not supplied) at the slip joint.
7. Remove the right side foot peg bolt and fasten the mid pipe bracket (Part No. 1316-P) Ref. Figure 5 Note: Using high strength Loctite (not supplied), torque to factory specs.
8. Mate muffler assembly (Part No. Y299RB) to header section #2. Note: Use high-temp anti-seize (not supplied) at the slip joint.
9. 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 bolt (1), M8 flat washers (2), and M8 locknut (1) Ref. Figure 6 Note: Do not fully tighten yet.
10. Install the supplied exhaust springs to the spring tabs (two locations), then open the supplied barrel band clamp to slide over the pipe and through the mid pipe bracket slot. Note: Do not fully tighten yet.
11. Install supplied heat shield (Part No. Y296HB) using supplied hose clamps. Ref. Figure 7
12. Starting at the head, final tighten the three stock header nuts (torque to factory specs), the barrel clamp used on the mid pipe bracket (tighten to 90 in/lbs.), and lastly, the M8 bolt used on muffler bracket (torque to 18 ft./lbs.).
13. 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.
14. After initial ride, re-torque barrel clamp and all hardware as needed.

EXHAUST CARE #

1. 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.
2. It is considered normal for stainless steel exhaust systems to discolor due to heat.
3. High performance engine tuning utilizing  a dyno will likely result in severe discoloration.
4. 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.
5. 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.
6. Proper mapping is required to achieve optimal performance from this exhaust system.

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.