Highside/Lowside - A Motorcycle Podcast

President of the Los Angeles Lakers, Tim Harris, joins the show to discuss his life as a returning rider to answer the question: is it ever too late to start riding? Tim rode from age 16 to 22, then spent the next four decades "frozen in motorcycle ice" while building a family and a career. Now back in the saddle in his 60s, Tim shares the hilarious and humble reality of relearning the "friction zone" and surviving the "intervention" of worried coworkers. We also dive into new data from AIM Expo about Gen Z's interest in motorcycling and answer a listener's question about how to convince a reluctant spouse to let you start riding later in life. Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos

Zack and Spurg dive into the auditory soul of motorcycling and what makes an engine sound "iconic." From the rhythmic clatter of a Ducati dry clutch to the "vicious" scream of an Aprilia V4, we break down the sounds that transports us to the racetrack and the open road. We also pay tribute to the legendary Japanese industrial designer who survived the atomic bomb to create the iconic Kikkoman soy sauce bottle AND the Yamaha VMAX. Stick around for a special Engine Sound Guessing Game and a heartfelt discussion on the risks and rewards of putting kids on the back of a motorcycle. Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos

In honor of "Back to the Future" turning 40, industry experts like Ryan Fortnine, Matt Oxley, and Ari Henning take a trip back in time with Zack & Spurg to explore five massive motorcycle "What if" scenarios: What if Boeing built motorcycles? What if Harley-Davidson abandoned "heritage" for "cutting-edge"? How would a different World War II outcome have changed German and Japanese engineering? What does a truly safe motorcycle look like? If gas motorcycles were banned tomorrow, would the community survive on electric and hydrogen alone? Plus, Zack analyzes his actual Alpinestars airbag crash data, comparing his 65-mph highside to Marc Marquez's infamous tumbles. Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos

Is Marc Márquez the greatest of all time? To kick off the 2026 MotoGP season, Zack and Spurg sit down with legendary racing journalist and historian Mat Oxley to discuss why Márquez is a "generational talent". They dive into the incredible story of how Marc learned to save front-end slides with his elbows, the countless surgeries it took to keep him on the grid, and how Spain has created the most successful racing culture in the world. The guys also take a look towards the future at the 2027 MotoGP rule changes that could reset the entire field—and whether Márquez's body will let him stick around to see them. This entire conversation was inspired by Mat's new book, "Marc the Magnificent: Seven-times MotoGP King". To check out Mat's book for yourself, here is a link to his website. Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos

The $6,000 Harley-Davidson, Honda's automatic clutch, the "vicious" KTM 990 RC R superbike, and much, much more are discussed as Zack and Spurg preview the most exciting motorcycles, tech, and industry shifts coming in 2026! We also have an "Am I the A-hole" debate involving a delivery robot and a parked Harley… and we're joined by gear expert Pat McHugh to discuss the future of hearing protection: Cardo's active noise-canceling helmet. Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos

Can you imagine crashing a superbike at a press event in a foreign country? Zack can! Zack Courts returns to the show and shares his experience (both on and off the track) at the KTM 990 RC R press event in southern Spain. Spurg & Zack also discuss changes in motorcycle policy at the Circuit of the Americas and whether or not a high BMW price tag is worth it off-road. Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos

In the last episode before Zack's triumphant return, Spurg and guest host Ari Henning celebrate the 40th anniversary of the Suzuki GSX-R by digging into its rise, fall, and rebirth as one of the most prolific motorcycles in the industry. The guys also dive into the challenge of finding a good used GSX-R and discuss the "Gixxer Bro" culture. Plus, stick around for a very special Engine Sound Guessing Game! Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos

The legendary Ryan from FortNine drops in to go deep into his most ambitious project yet: a feature-length documentary chronicling a record-breaking, 16-day motorcycle trip around the entire world. With Zack Courts still out on the mend, Spurgeon Dunbar is joined by CTXP producer Spenser Robert to ask Ryan about his chaotic time in India, the freezing "Nullarbor" of Australia, the logistical miracles worked by Ducati fixers at the Turkish border, and what it's really like to live on a bike for 24+ hours at a time. Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos

Spurgeon is joined by Common Tread's Lance Oliver to take a deep dive into the financial and structural changes rocking the Harley-Davidson corporate world. From a surprise CEO change (Artie Starrs from Topgolf and Pizza Hut) to a dealer revolt and the future of the brand, we're cutting through the clickbait to deliver a rational, fact-based look at the Motor Company. Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos

The Motorcycle Dating Game returns! Patrick Garvin and Spurg match Highside/Lowside listeners to their perfect motorcycle. And they all lived happily ever after! Check out more from RevZilla: Common Tread: News, opinions, and written reviews RevZillaTV: Bike reviews, How-To's, and product videos