Bay4 by Yama Vans | Sprinter Performance Upgrades

Bay4 is Canada’s only dedicated Sprinter aftermarket performance specialist. Backed by Yama’s extensive experience building Class B adventure vans, you can count on us to offer expert installation, premium adventure products, and a client-first approach.

Tuned for the trails and the commute

From highway miles to miles off-road, Bay4 upgrades improve handling, stability, and your overall driving experience.

Sprinter-specific, seamless design

Every product we design or install is precision-engineered for Sprinters and built to maximize adventure. Each upgrade integrates cleanly and performs wherever even the wildest roads lead you.

go further and for longer

We’re all about pushing the boundaries of where you can travel and how long you can keep the good times rolling. With the right gear, you’ll optimize every adventure and get more out of your investment.

Yama Vans is a Canadian manufacturer of high-performance, customized adventure vans built to maximize comfort and off-grid capability year-round. Thanks in part to their Mercedes-Benz Expert Upfitter designation, Yama was quick to become a trusted name across North America for people in the market for elevated adventure vehicles.

Established in 2018.
Designed, manufactured, and tested in Canada.
Backed by a team of experts in design, engineering, manufacturing, and automotive.

Bay4 is Yama’s Sprinter performance and adventure gear division. It’s where we’re bringing Yama’s elevated standard of quality, capability, and expertise to the aftermarket world for any Sprinter owner looking to get more from their van.

Learn More About Yama Vans

What type of upgrades do you offer?

We specialize in precision-engineered aftermarket Sprinter upgrades that enhance durability, drivability, and off-road capability. Our offerings include:

Suspension & Handling – Upgraded shocks, lift kits, and suspension tuning for a smoother, more controlled ride in any terrain.
Lighting & Visibility – High-output auxiliary lighting, fog-cutting LEDs, and frame-mounted solutions for safer night and off-road driving.
Underbody Protection – Skid plates, rock sliders, and impact-resistant armor to safeguard vital components.
Adventure Gear Installations – Tire carriers, ladders, racks, gear storage, and other solutions that optimize space, function, and adventure-readiness.

Every upgrade integrates seamlessly, is expertly installed, and built to match the way you explore. See our full list of upgrades and services here.

We do not offer partial build services for cabinetry, plumbing systems, or electrical systems.

What models of vans do you service?

Bay4 specializes in aftermarket performance and gear installations exclusively on the Mercedes Benz Sprinter platform. We offer services on DIY Sprinters and Sprinter Class B, B+ and C RVs in addition to Yama builds. If you have a Sprinter-based rig and are looking for top-tier performance upgrades, we’ve got you covered.

How do I get started?

Every project begins with a custom quote. Once you tell us about your van and your goals, our team will walk you through the best options for your build.

"We just returned home from Alberta after having the ARB Compressor, the Owl B2 Pro, Owl Mini-Monster Box, and Baja Lights fog lights installed. These are all upgrades that Pat suggested during the initial build… we should have listened then, but we’re glad we have them now. Thanks again for the great service and pass our thanks on to Jaimie and the other techs!"

Rene F.

"The difference between stock and the Yama upgrade on suspension is huge, but even more significant is the brake upgrade. It's so much better! (Mercedes should be required to improve the stock brakes to this level)"

Neil S.

"I was just showing off our van at a dinner party last Saturday and the topic of "how well does it drive" came up numerous times, so I proceeded to explain how important the Agile Off Road package was to us when converting our MBS. It is so much fun to drive, mainly due to the right combination of superior components that Yama has sourced, it's tried and true for big blue!"

Greg M.

“We’re very happy with the work Yama did enhancing our van. Whether is practical (water tanks), useful (Rolef screen), or just plain sweet (rock lights) the work they did keeps our family happy in the van as we find new things to explore”

Andrew K.