- OR -

Exhaust Systems Yamaha® YFZ 450

HMF Racing Yamaha / YFZ 450 / Slip-On / 04-13 / Elliptical

For Models: YFZ 450 (2004-2013)


1. Loosen the (2) Silencer-to-Frame Mounting Bolts.

2. Loosen the Clamp at the Silencer-to-Head Pipe Joint.

3. Brace the back of the Silencer with one hand and remove the Mounting Bolts.(See Figure #1)

Yamaha / YFZ 450 / Slip-On / 04-13 / Elliptical - Figure 1

4. Pull back and twist to remove the Silencer from the Head Pipe.

5. Full system only:  Remove the Head Pipe-to-Cylinder Head Nuts and Head Pipe.  

Inspect the Gasket for wear and damage.  Replace if necessary.


Note: It may be necessary to loosen the original Head Pipe-to-Cylinder Head Nuts to allow for some movement of the head pipe.  This movement can be beneficial when ensuring proper exhaust system installation and alignment.

1. Install the supplied Clamp to the slotted end of the Mid Pipe.  Then, slide the Mid Pipe onto the end of the Head Pipe, leave the Clamp loose.

2. Using the supplied hardware, install the Mounting Bracket onto the Silencer.  (Bracket may be pre-installed from HMF)  

Please note that you need to adjust and align the position of the bracket bolts and the bracket itself before tightening.  We send this loose to make the installation easier on you.  Ensure everything is aligned and positioned and make sure to tighten all of the bolts securely.

3. Refer to the image to ensure proper bracket installation.(See Figure #2)

Yamaha / YFZ 450 / Slip-On / 04-13 / Elliptical - Figure 3

4. Slide the Silencer with Mounting Bracket and Clamp onto the end of the Mid Pipe.

5. Using the supplied hardware, bolt the Silencer to Sub Frame.

6. Tighten the Silencer-to-Sub-Frame BoltsSilencer to Bracket Bolts, Head Pipe Nuts (if loosened), and (2) Clamps.

7. Inspect all areas around the exhaust system for clearance with hoses, cables etc.  HMF will not be held responsible for damage caused by improper installation.(See Figure #3)

Yamaha / YFZ 450 / Slip-On / 04-13 / Elliptical - Figure 4


Hook me up! Get 10% off your next exhaust or equipment order.

Sign up for the HMF Community and receive the following perks:

  • 10% off your next exhaust or equipment purchase
  • Details about upcoming HMF products
  • Exclusive product giveaways
Sign Me Up!

No, thanks. I'll pay full price for my powersports needs.