29+ Full Suspension – Lenz Sport Behemoth

The Lenz Sport Behemoth was one of the very first full suspension designs specifically designed around the 29×3.0 tires, aka 29 plus.

It is a versatile platform that can run a variety of wheel sizes with relatively short chain stays to provide monster-truck-like capabilities in technical terrain, while remaining agile and relatively nimble for yielding such large wagon wheels.

With the 29+ tires, traction when climbing or descending is amazing, but when combined with suspension front and rear, line choices seem to matter much less than with other bikes.

In the video below, Jeff shows us his medium Lenz Sport Behemoth and how he has it built up.

It is a fantastic build with parts from Hope, WTB, Shimano’s XTR drive train, as well as Race Face, Thomson, Truvativ, Rock Shox, and Manitou. For tires, he is running the Maxxis Chronicle 29 x 3.0 up front, and a Bontrager Chupacabra 29 x 3.0 on the rear wheel.

Build Specs:

Medium Frame: Lenz Fat Behemoth, Rockshox Monarch RT3, 4 inch rockers (Lenz has 5″ rockers available) – Compatible with :120mm, 130mm, 140mm, or 150mm fork travel options – 12mm rear through axle – BOOST 30.9mm seatpost diameter – Routing for stealth dropper

Fork: Manitou Magnum Pro Fork 120mm

Bars: Syntace Carbon Lo Rise

Grips: Ergon Stem: Syntace

Seatpost: Thomson Set Back

Saddle: WTB

29″ Wheelset:

Rear: WTB Frequency Team I29 w/ Hope Pro 4 Hub, 12mm SRAM Maxle, 148mm BOOST spacing

Front: WTB Frequency Team I29 w/ Hope Pro 4 Hub 15mm Thru-Axle, 110mm BOOST spacing

Tires: Brand new (never ridden) Maxxis Chronicle in front and a Chupacabra on back at 50% life. I will throw in an almost brand new WTB Ranger as well

Brakes: Shimano XT: 180mm Front and Rear

BB/Crankset: Race Face Evolve with RaceFace 30t Narrow-Wide.

11 Speed Drivetrain: XTR M9000 Shifter and Rear Derailleur

According to Jeff, below is the frame geometry for this particular bike, which may vary from what Lenz Sport is currently using on their Behemoth:

Top Tube: 23.375 inches

Head tube: 4 inches

Seat tube:17eff

BB: 13.8 inches

Chain Stay Length: 16.7 inches

Seat-tube Angle: 74.3 Degrees

Head-tube Angle: 67.5 Degrees

Wheel Base: 44.8 inches

Stand Over: 29.5 inches

As I stated in the video, Jeff has this bike up for sale now, so I am very glad we are able to show it to you before it heads to its new owner. These bikes are pretty rare to see in person. In fact, this is the very first one I have seen in San Diego County, with our population of 6 million people. If you are interested in Jeff’s Lenz Sport Behemoth, you can view his PinkBike listing here: https://www.pinkbike.com/buysell/2345402/

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