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The extended ears for the caliper mount on the spindle and the lack of countersink on the hub for the rotor bolts tells me you for sure have the early stuff.

The picture of the J-arm spindle / knuckle that you posted “ IS “ for the model year 87-89 which requires part # 1UY-23501-01-00 Left Side & 1UY-23502-01-00 Right Side. Then for the A-arm spindle / knuckle for the model year 90-06 which requires part # 3GD-23501-10-00 Left Side & 3GD-23502-10-00 Right Side. Here is a picture of what the spindle / knuckle looks like for the 90-06 Banshee. The picture that I posted is from a 1997 Banshee that Im currently working on for a friend. If you look the picture that you posted and compare it to the picture that I posted you can definitely see the difference between the spindles. I also circled the caliper bracket bolts in my picture to show how the spacing is different from the 87-89 Banshee in your photo and the 90-06 Banshee that is in the photo that I posted. Sent from my iPhone using Tapatalk

I have had T-5 pipes, CPI inframes and TR6 pipes and they were all a little different. The current Banshee had CPI inframes on it when I got it and I HATED it for duning. There was no low/mid grunt just a hard hit at the top end and a lot of noise compared to other pipes. So I decided I wanted either T-5s or TR6 pipes instead and decided to get the TR6 pipes since I already had T-5 pipes before on my previous Banshee and wanted to try something different At the time my Banshees were both running stock porting, +4 timing and 21cc domes with K&N filters. When I bolted on the TR-6 pipes it felt a lot like the old T5 pipes with a nice strong midrange pull through to the top. Overall I felt the TR-6 pipes were the best pipe I'd tried and really like the smooth power and good midrange. Plus I like the better construction of the TR-6 compared to the T5 pipes - namely the better mounting and better fit of the TR-6 pipes. Now that I have a ported bike I am kind of wishing I would have went with the T-5 pipes because I can feel that the TR6 pipes aren't revving out as high as the old T-5s did. I did some GPS speed tests and the TR6 PORTED Banshee is slower by 2 mph than the T-5 NON-PORTED Banshee was (but it gets up to speed a LOT faster). TR6=80 mph vs T-5=82 mph. Both had stock gearing. 2 mph on top end is not a big difference and I only mention that to illustrate about the TR6 pipes not revving as high as the old T-5s. Before I was ported I would run close to my friends Banshee give or take a bike length here and there. Now with porting and TR-6 pipes I am pulling 1 gear higher on every hill and beating him by several bike lengths so if the TR6 pipes are holding me back it's really not by all that much. With the porting I just have a lot more power everywhere from mid-range up and I don't feel as though the TR6 pipes are hurting me until I get up to the top RPM ranges. There's my report... FWIW.

Just to confirm what has been said too, we have tried them on stock port, ported , and radically ported strokers. They worked well on all but on the more "radical" ported bikes they felt alittle flat on top and the CPIs took care of that. They are made for stock or midly ported bikes. Dont be afraid to have some porting done with T6s as they will make you smile!!!! Great all around pipe if you keep port durations lower, just not a pipe for drag porting !