ONLY compatible with the Oversize Bar Adapter V2. Not compatible with the original Oversize Bar Adapter or ANY other product we sell. These are a very specific product, if you don’t already own or intend to purchase the Oversize Bar Adapter V2 you probably want our Mountain Strap Adapter (for Knucks V1) or Mountain Strap Adapter V2 (for Knucks V2 and FTP). Verifying fit is your responsibility. Please contact us if you have any questions prior to purchase, we are always happy to help.