Shifting Gear: Mountain Bikes, Tires, Knee Pads, Biobased Lubes, and More 

The latest installment of Shifting Gear showcases a diverse range of mountain biking equipment and accessories recently tested by the BikeRumor team. Among the highlights is the Pivot Mach 4 SL XX Transmission, a lightweight cross-country race bike weighing just 25 pounds. Having spent several months riding and fine-tuning this model, the reviewer contrasts its nimble, razor-sharp handling with the much heavier, long-travel Specialized Turbo Levo 4 EVO Pro, emphasising the distinct riding experiences each bike offers. The Mach 4 SL is positioned as a precision machine ideal for fast, technical riding, with plans to race it at the upcoming Downieville Classic. The Specialized Turbo Levo 4 EVO Pro represents a different breed of eMTB, designed for aggressive trail and enduro riding with significantly increased suspension travel. Featuring a 170mm rear and 180mm front travel setup, along with RockShox’s latest Zeb fork and Vivid shock, the bike delivers a plush, composed ride that inspires confidence even on challenging descents. Despite its size and weight, the EVO Pro handles with surprising agility, earning praise for its balanced geometry and high-end build, including a striking satin carbon frame finish. Beyond bikes, the review also covers practical cycling gear such as the Gregory Alpaca Utility Tote 50, a versatile and spacious storage solution for transporting riding equipment or other essentials. With a 50-litre capacity, multiple internal and external pockets, and a semi-rigid structure that maintains its shape when loaded, the tote is lauded for its simplicity and functionality. While it lacks the modular compartments of more specialised bags, its affordability and robust design make it a compelling option for riders seeking a straightforward carryall. Additionally, the article touches on the new Specialized Trail Control tyres, which have been fitted to the Pivot Mach 4 SL to enhance its grip and handling. Positioned between the Ground Control and Butcher models in terms of tread aggressiveness, these tyres are aimed at aggressive cross-country, trail, and eMTB use. Available in different casing and rubber compound options, the Trail Control range offers riders tailored performance characteristics depending on their terrain and riding style. Overall, this roundup highlights the evolving landscape of mountain biking gear, from cutting-edge race bikes and powerful eMTBs to practical accessories and innovative tyre technology. The detailed hands-on testing provides valuable insights into how these products perform in real-world conditions, signalling exciting developments for riders across various disciplines.