Unreleased Shimano 105 Mechanical 12-speed groupset leaked on retailer website

khs bike spec chart showing the new shimano equipment
(Image credit: khsbicycles)

When Shimano launched the new 105 R7100 Di2 groupset in June 2022 it took a lot of us a while to come to terms with the fact that, on paper at least, the writing was on the wall for mechanical Shimano groupsets from 105 level and above. 

Shimano 105 has long been an affordable groupset that offers fantastic value for money but the switch to electronic meant a large price jump that left cyclists in some quarters disheartened. Mechanical groupsets still offer great performance as outlined in our review of the Sram Rival AXS eTap groupset

Tom Wieckowski
Tech writer

Tom joined the Cyclingnews team in late 2022 as a tech writer. Despite having a degree in English Literature he has spent his entire working life in the cycling industry in one form or another. He has over 10 years of experience as a qualified mechanic, with the last five years before joining Cyclingnews being spent running an independent workshop. This means he is just as happy tinkering away in the garage as he is out on the road bike, and he isn’t afraid to pull a bike apart or get hands-on with it when testing to really see what it’s made of. 

He has ridden and raced bikes from an early age up to a national level on the road and track, and has ridden and competed in most disciplines. He has a keen eye for pro-team tech and enjoys spotting new or interesting components in the wild. During his time at Cyclingnews, Tom has already interviewed some of the sport's biggest names including Mathieu van der Poel, Tadej Pogačar and Alberto Contador. He's also covered various launches from brands such as Pinarello, Ridley, Specialized and more, tackled the Roubaix Challenge sportive aboard his own rim-brake Cannondale SuperSix Evo, tested over 20 aero helmets in the wind tunnel, and has created helpful in-depth buying advice relating to countless categories from torque wrenches to winter clothing.