Lenz Sport is reviving an icon with the new Lunchbox Enduro, a made-in-Colorado aluminum bike that leans into big-tire compatibility, simple serviceability, and a thoughtful approach to bike fit. The Lunchbox Enduro pushes the original Lunchbox trail bike toward faster, rougher tracks with a longer chainstay and lower bottom bracket height while keeping the platform’s hallmark versatility.
At the core is 160mm of rear travel driven by a Horst-link layout and what Lenz calls a progressive spring curve, paired with either a 180 or 190mm fork. The intent is a supple initial stroke for traction over chatter with a supportive ramp for bigger hits and landings. The aluminum frame specs are generally straightforward: a 73mm threaded BSA bottom bracket, 44/49 tapered head tube, 12x148mm rear axle, 30.9mm seatpost with stealth routing, and UDH dropouts for drivetrain compatibility now and in the future. The shock is a 205×65mm trunnion unit, a common size that makes tuning and swaps easy.
It’s a 29+ enduro bike
Tire and wheel flexibility is the hook that sets the Lunchbox Enduro apart. Lenz says there are two versions of the frame: one for 29er wheels and another for 27.5in wheels, both of which fit tires up to 3.0in wide.
“You guys asked for it, so Devin made it,” an Instagram post from the brand says. “This is the all new Lunchbox Enduro bike. This one has longer reach and chain stay and lower bottom bracket than the Lunchbox Trail bike. […] This is the only enduro bike out there that can accommodate as wide of a tire range as this bike. You can run anywhere from a 2.3 to a 3-inch tire on this beast.”
Though there aren’t a lot of three-inch-wide enduro- or gravity-oriented tire choices on the market, Maxxis does make 29×3.0 versions of the Minion DHF and DHR II, though only with EXO casing and not the tougher EXO+ and DD casings. And if you consider 29×2.80 to be 29+, there’s the Maxxis Rekon. At one time, the more aggressive WTB Velociraptor was offered in 29×2.80, but that tire is no longer available.
Photos of the Lunchbox Enduro show bikes specced with the RockShox Zeb fork, which is said to fit tires up to about 3.2in (81mm) wide.
Geometry and Rider Area Distance
Geometry is where readers will raise eyebrows—and where Lenz’s philosophy diverges from mainstream trends. Reaches (aka front-center) top out at 475mm on the current chart, with smaller sizes listed at 420/430/440/460mm. On paper, that looks short compared to many modern enduro frames. Lenz’s counterpoint is that “Rider Area Distance” (RAD) — the foot-to-hand distance when you’re in an athletic stance — matters more than a single horizontal number. The company publishes a wide RAD range per size and encourages riders to use bar height and cockpit setup to hit their target. If you like the stability a long front center brings but feel over-stretched on ultra-long reaches, this approach may resonate.
For riders who do want more front-center, Lenz says a larger size is in the works. “Devin will be designing one more larger size that will be around a 500mm reach,” Nick Wigston told Singletracks. “Geo will be added at that point, but people can order it now, and he will update geometry for a ‘custom’ order if that is what people want. ”
Bottom bracket height is another notable lever. Lenz lists three BB numbers that vary with tire volume—approximately 335mm (2.4in tires), 345mm (2.6in), and 355mm (3.0in)—so riders can trade a bit of pedal clearance for cornering glue or vice versa. Chainstays are size-constant at 435mm for 29in wheels (425mm with 27.5in), again underscoring the brand’s preference for balanced handling over the longest possible reach. Stack figures are tall (roughly 634–665mm), which also affects how short or long a given reach will feel on the trail.
The head angle is a contemporary 64 degrees, with seat angles that range from 76.5° (smaller sizes) to 75.5° (larger sizes). Lunchbox enduro wheelbases span roughly 1220–1295mm across the five sizes.
Objectively, the package reads as a rider-first enduro tool: an aluminum frame you don’t have to worry about, standards you can service, kinematics aimed at speed and control, and multiple wheel choices — including plus tire sizes you almost never see on an enduro frame. The tradeoff is as philosophical as it is numerical. If you like the idea of a US-made frame you can configure around terrain, wheels, and build parts, the Lunchbox Enduro makes a compelling case.
Frame pricing, without shock, starts at $2,750, and bikes can be purchased directly from lenzsport.com.
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