Very good valve - I've seen it not recommended for cars over 300cc. no issues or problems so i bought it for my KZ550 as the stock vacuum tap leaked at times and used that as insurance (better safe than sorry and such). The problem is that the main valve body is steel not brass and the walls of the serrated joints are quite thick so even with a 5/16 (8mm) fuel line there is still a limitation as the inside diameter is reduced. a lot of. I haven't had any fuel issues yet, but I haven't ridden the bike much either. The valve works very smoothly.
Red L Motorcycle Gloves: Breathable, Touchscreen & Anti-Slip For Men Women | Hard Knuckles Protection For Motocross, BMX ATV MTB Cycling, Road Racing - COFIT
39 Review
Xelement B7552 Men'S Black 'Easy Fit' Premium Leather Motorcycle Chaps - 36
32 Review
XFMT Full Face Motorcycle Helmet Flip Up Adult ATV Dirt Bike Carbon Fiber S (Large, White Pink Butterfly)
29 Review
Maximize Your Performance With SHIMA SX-2 EVO Motorcycle Shoes For Men - Reinforced Leather Riding Shoes With Ankle Support And Anti-Slip Sole
31 Review