All,
When I bought my new 09 570 I mounted a set of hardparts radiator guards for obvious reasons. I followed the instructions given in the package, and the only obvious thing that I had to do was trim the top right side of the guard to clear the cable guide.
It wasn't until after returning home from FR 3 and Idaho where I threw my bike down a a hill that I discovered that my right side radiator and guard had been smashed in pretty good. Long story short I also discovered that all 4 rubber isolation gromments were destroyed. My KTM mechanic friend pointed out to me that the mount had taken up over 3mm of the mounting tower or pin, and that by just using the stock mounting hardware the rubber gromments, in addition to getting destroyed from over compression, were not able to perform their primary function of isolating vibration.
So a quick trip to Scott's performance products and I had the washers, .450" outside diameter x 6mm inside diameter and 1.5mm thick, I needed as well as the bolts, 6mmx16mm.
The stock 6mmX12mm bolts are self tapping bolts, that means about half of the bolt is not gripping the threads. Since the radiator guard is 3mm thick, I was going to use two of the 1.5mm washers at each mounting location. I checked the depth of each mounting pin, and the shallowest were the lower's with a depth of 16.5mm. This was of no consequence as I was adding 3mm of washers, and the stock washer that's under the gromment is about 2mm thickness.
Before installing the new hardware I did run a tap into all the mounting holes to clean out the powder coating and other junk from the threads that had not been used yet. My guess is that the self tapping screws are used from the factory for just the same purpose.
Next, I placed two 6mmx1.5mm washers down inside each radiator mounting gromment and then installed the radiators over the guards and used the new 6mmx16mm bolts to secure them. The result was radiators had the same flexibility as stock.
Even though the stock guard on the right side was ruined in the fall, it had served it's purpose as I am sure without it at least two tubes would have been torn off the bottom tank in the fall, in the middle of no where.
When I bought my new 09 570 I mounted a set of hardparts radiator guards for obvious reasons. I followed the instructions given in the package, and the only obvious thing that I had to do was trim the top right side of the guard to clear the cable guide.
It wasn't until after returning home from FR 3 and Idaho where I threw my bike down a a hill that I discovered that my right side radiator and guard had been smashed in pretty good. Long story short I also discovered that all 4 rubber isolation gromments were destroyed. My KTM mechanic friend pointed out to me that the mount had taken up over 3mm of the mounting tower or pin, and that by just using the stock mounting hardware the rubber gromments, in addition to getting destroyed from over compression, were not able to perform their primary function of isolating vibration.
So a quick trip to Scott's performance products and I had the washers, .450" outside diameter x 6mm inside diameter and 1.5mm thick, I needed as well as the bolts, 6mmx16mm.
The stock 6mmX12mm bolts are self tapping bolts, that means about half of the bolt is not gripping the threads. Since the radiator guard is 3mm thick, I was going to use two of the 1.5mm washers at each mounting location. I checked the depth of each mounting pin, and the shallowest were the lower's with a depth of 16.5mm. This was of no consequence as I was adding 3mm of washers, and the stock washer that's under the gromment is about 2mm thickness.
Before installing the new hardware I did run a tap into all the mounting holes to clean out the powder coating and other junk from the threads that had not been used yet. My guess is that the self tapping screws are used from the factory for just the same purpose.
Next, I placed two 6mmx1.5mm washers down inside each radiator mounting gromment and then installed the radiators over the guards and used the new 6mmx16mm bolts to secure them. The result was radiators had the same flexibility as stock.
Even though the stock guard on the right side was ruined in the fall, it had served it's purpose as I am sure without it at least two tubes would have been torn off the bottom tank in the fall, in the middle of no where.
