I've always wondered if those bar end weights do reduce vibrations. I went online to see what the collective had to say and some folks say they do while others say they hardly made a difference. Well I decided to find out for myself. I recently replaced the handlebar grips on my 2007 6th Gen because the OEM ones were getting faded and worn out from over 50k miles and 11 years of use. The grips I used where by Pro Grip dual density for sport bikes. So these weren't overly thick. At least they don't feel much different from the OEM (but look better). After installing the new grips I rode the bike around without bar end weights. Wow! I could feel a high frequency vibe when the bike goes to VTEC really well. The vibes were quite pronounced. I then put the Honda OEM bar end weights on and the vibes were reduced to a degree. But not as much as I thought and I was beginning to believe the naysayers. Until I decided to experiment and install a set of Rhino Bar Ends that weigh about 12 ounces, which Rhino says reduces vibes due to additional weight, although it wasn't a lot more than stock. Damn! Wow! It made a difference! It's like my VFR800 suddenly got a finely honed tune up. There are still vibes at VTEC mode but I'm guessing it reduced it by quite a noticeable margin. Rhino Bar end weights for Honda: https://www.rhinomoto.com/https:/www.rhinomoto.com/honda-barend-sliders/ If these improved felt vibrations, then heavier ones should make even more of a noticeable difference. So I started looking around. There are tons of Chinese made stuff out there for cheap. Then I found these: http://www.hvmp.com/ProductDetails.asp?ProductCode=HONDA-BAR-ENDS They come in heavy or extra-heavy, silver or black. Made in the USA of full stainless steel. They also have a Facebook page. These are designed specifically to REDUCE vibes and not just to look good. Neither the Rhino bar ends nor the Hudson Valley Motorsports products are cheap. The Rhino's are about $60, while the HVM's are about $80. I'm thinking a good set of grips plus these heavy bar ends will definitely smooth out most of the felt vibrations on the VFR. It did with mine so I'm now a believer!