AFT Single Exhaust Honda CRF450 Down Pipe 2017-2019

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 grommet and the grommet spacer into the circular hole on muffler bracket; use either early or late model Ref. Figure 1
4. Fasten (either early or late model) muffler bracket to the existing master cylinder mounting screw holes (two locations) using the M6 button head screws (2), M6 flat washers (2), and the bracket spacers (2) Ref. Figure 2 Note: Using medium strength Loctite (not supplied), torque to 90 in./lbs.
5. Using a lift, reduce the weight on rear end of the motorcycle to remove the right side linkage bolt.
6. Fasten mid pipe bracket reusing the right side linkage bolt. The stock washer between the nut is not                                                       reused in this installation step Ref. Figure 3 Note: Using high strength Loctite (not supplied), torque linkage bolt to 27 ft./lbs. per Factory specs.
7. Install the exhaust header using the stock cylinder head nuts Ref. Figure 4
8. 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 lock nut (1) Ref. Figure 5 Note: Torque to 18 ft./lbs.
9. Open the supplied barrel clamp to slide over the pipe and mid pipe bracket Ref. Figure 6 Note: Tighten to 90 in./lbs.
10. 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.
11. You are now ready to start your motorcycle.
12. 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.

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.