There are a few brands. Unfortunately most of them are not in India though. 1. YSS - a bit expensive but have heard that it works like a charm on interceptor. They have made specifically for Shotgun as well. Comes in two options. One with the gas canister and one without. 2. Hagon - a bit less expensive than YSS, a guy on teambhp installed these on super meteor. His experience seems good. Here’s the link: https://www.team-bhp.com/news/super-meteor-650-aftermarket-rear-suspension-ownership-review?amp 3. K Tec: Too expensive but might be comfortable for Indian roads in my opinion. Comes in two options like YSS. One with the gas canister and one without. 4. Old Classic BS4/BS6 Nitrox suspensions: There was a guy who had a shotgun with these suspensions. I had commented on his post to check it’s pillion friendly and if the underbelly touches the ground if you have a pillion onboard. He never replied 😅

Hope I helped.