4" would pair well with anything from around 23mm to 30mm

this rack comes with a removable light board with brake lights

Very well priced

sleeping bags or clothing and keep it clean and dry

25 mm thick TPU (thermoplastic polyurethane) for superior durability and flexibility

Bell Sixer MIPS Helmet - M - Fasthouse Matte Black - Gloss Gold - AS-NZS�2063-2008 Standard PLP|Largest Cog 4" would pair well withThe Bell Sixer MIPS Helmet is your new best friend on the trail. This is a trail helmet that's designed to ventilate well, sit close and comfortably on your head, while providing the exceptional impact protection that comes from the integrated MIPS system. It's kitted out with Bell's proprietary Sweat Guide to keep you super comfortable no matter how hard you're slogging. You can also take this thing full enduro and slap on goggles the Bell Sixer MIPS