Yoshimura Spark Arresters

This spark arrester when added to the R-77 or Hepta Force Yoshimura muffler will allow the user to pass the 'stick test' required in some riding areas. As a byproduct the Decibel output of the motorcycle will also be greatly reduced.

Yoshimura R-77 mufflers are used on: (Click to follow link)

• KTM 1190 and 1290 Adventures
• KTM 1290 Super Duke
• Rottweiler SSO Systems for 950/990 Adventure

Yoshimura Hepta Force mufflers are used on:

• KTM 1090 to 1290 Adventures

This item is not recommended for carbon cased mufflers for long or hard use periods. (Carbon tip on stainless body R-77 and Hepta Force is okay) Spark arrestors or 'DB Killers' restrict the exhaust pulses and trap the heat inside the muffler thus reducing the lifespan of the muffler packing. See here for packing replacement kits. (coming in a day or so)

In other words, in the exhaust world, you can rarely have your cake and eat it too. What this means is that when you are restricting decibel levels (a biproduct of spark arrestors and DB killer inserts), you are also restricting hot gasses escaping from the motor. This in turn reduces the lifespan of the internal packing of muffler and if the user does not increase the frequency of muffler packing replacement, the outer casing of the muffler can be damaged from blown packing. A sign of blown packing can be a hotter than normal muffler casing or discoloration of the outside of the muffler. Particularly on the forward side of the muffler. If these symptoms are occurring, replace the packing immediately with a packing rebuild kit linked above. (We are not trying to sell you something, we are trying to make sure that your miles are covered in smiles)