Mammoth Frame

The Lenz Sport Mammoth is our shorter travel downcountry trail bike made for long trail rides where longer travel is not necessary. This Lenz plus bike is built for efficient climbing and fast descending on trail systems like Buffalo Creek or the famous 401 trail in Crested Butte Colorado. The Mammoth is similar to the Behemoth but with 110mm rear travel and 120 to 140mm front travel for reduced weight and better efficiency over long rides. We are continuously evolving the full suspension plus bike. This bike is going to be the go to bike for many riders out there who aren’t riding drops and super chunky trails, but still want the many benefits of a plus bike and our famous trail optimized geometry enabling the rider to aggressively ride and maneuver any trail feature that presents itself. The Mammoth has incredible geometry and traction for climbing long steep  trails and a plush ride quality for fast descents. The stability of this Lenz Bike will impress any rider on slow technical trails, and you will feel more in-control at high speeds than ever before. You will love the handling, climbing, cornering, and descending characteristics and you can say goodbye to annoying pedal strikes. With our updated progressive spring curve rear suspension in a shorter travel, you get a super supple suspension that eats up the small bumps and has enhanced stability for greater pedaling efficiency. In a nutshell, the Mammoth will help you ride longer and faster and keep your body fresh for the next day. The Mammoth features our famous super short chainstay is designed for maneuverability and to be specific to 1x component groups. The Mammoth frame is 100% handmade in Colorado.
  • Optimized for tires from 2.4″ to 3.0″
  • Trail Optimized Geometry
  • Handmade Lightweight Aluminum frame
  • 110mm rear travel
  • 120mm, 130mm, or 140mm fork travel options
  • Rear Shock Spec: 210x55mm with 25.4x8mm mounting hardware
  • 12x148mm rear through axle. Axle included in frame price.
  • 30.9mm seatpost diameter
  • Internal brake, shift, and dropper cable routing
  • 44/49 Tapered Headtube
  • 73mm BSA threaded bottom bracket shell
  • 3.0″ tire clearance

Frameset:

  • Rear axle included
  • Rear shock not included

Fill out this form to request a quote for a complete bike.

We offer customized build kits for all Lenz Sport mountain bikes. We can build bikes with Sram, Shimano, or TRP drivetrain. We also offer Magura, Shimano, Sram, Hayes, TRP, and Hope Brakes. We typically build the wheels from scratch using Hope, Onyx, or DT swiss hubs and we can get other hubs if desired. Rims are dependent on desired tire size and we offer Sun Ringle, Stans, DT swiss, Derby Carbon and more. For cockpit components, we love Oneup and Fox dropper seatposts, Protaper and SQlab handlebars, and SQlab grips and saddles. For suspension we love DVO, Fox, and Rockshox and have other available options as well. We understand that each rider has their own component preferences so please let us know yours and we will fill in the gaps with our own recommendations.

**NOTE: Complete bikes range from $5500 to $10,000 depending on component choices

Description

The Lenz Sport Mammoth is our shorter travel downcountry trail bike made for long trail rides where longer travel is not necessary. This Lenz plus bike is built for efficient climbing and fast descending on trail systems like Buffalo Creek or the famous 401 trail in Crested Butte Colorado. The Mammoth is similar to the Behemoth but with 110mm rear travel and 120 to 140mm front travel for reduced weight and better efficiency over long rides. We are continuously evolving the full suspension plus bike. This bike is going to be the go to bike for many riders out there who aren’t riding drops and super chunky trails, but still want the many benefits of a plus bike and our famous trail optimized geometry enabling the rider to aggressively ride and maneuver any trail feature that presents itself. The Mammoth has incredible geometry and traction for climbing long steep  trails and a plush ride quality for fast descents. The stability of this Lenz Bike will impress any rider on slow technical trails, and you will feel more in-control at high speeds than ever before. You will love the handling, climbing, cornering, and descending characteristics and you can say goodbye to annoying pedal strikes. With our updated progressive spring curve rear suspension in a shorter travel, you get a super supple suspension that eats up the small bumps and has enhanced stability for greater pedaling efficiency. In a nutshell, the Mammoth will help you ride longer and faster and keep your body fresh for the next day. The Mammoth features our famous super short chainstay is designed for maneuverability and to be specific to 1x component groups. The Mammoth frame is 100% handmade in Colorado.

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Please note! All Lenz Sport frames are hand-made in Colorado. They are not factory built on an assembly line. Designs evolve iteratively, per Devin’s expertise and judgement. Specifications may vary, and are subject to change without notice.
 Lenz Bike Geometry Comparison Chart- compare the Sesh, Mammoth, Behemoth, and Lunchbox

Our frame size is now the Reach measurement. We no longer use size labels since they are irrelevant. *Focus on rider height, reach, RAD, and Standover (SO) when choosing size. RAD = Height in mm times .447. Click here for more information on Ridelogic frame sizing and to submit measurements, or come into our shop for a fit. Once you nail down Reach and Standover, choose your bike based on how much travel you want.
MODELSeshSeshMammothBehemothLunchboxMammoth Behemoth Lunchbox MammothBehemothLunchoxMammothBehemoth LunchboxMammoth BehemothLunchbox
REAR TRAVEL130130110140160110140160110140160110140160110140160
FRONT TRAVEL140140120-140150-160170-180120-140150-160170-180120-140150-160170-180120-140150-160170-180120-140150-160170-180
RIDER HEIGHT 4’10’-5’3″ 5′-5’4″ 5’2″-5’6″5’2″-5’6″5’2″-5’6″ 5’5″-5’10”5’5″-5’10” 5’5″-5’10” 5’10”-6’1″ 5’10”-6’1″ 5’10”-6’1″6’0″-6’3″6’0″-6’3″ 6’0″-6’3″ 6’4″-6’8″ 6’4″-6’8″ 6’4″-6’8″ 
Frame Size:
REACH
 395 415420 420 420 430 430 430 440 440 440 460460 460 475 475 475
STACK 610 610625 630 634625 630 635635 640 645 645650 655655 660 665
RAD690-760720-780720-790740-800740-800745-805745-805745-805760-820760-820760-820780-860780-860780-860850-920850-920850-920
SO 690 695690 685 705 690 695 710710 730 750 720740 760745 765 785
HA 65.5 65.565 64.5 64 65 64.5 6465 64.5 64 6564.5 6465 64.5 64
TT 565 584575 575 575 594 594 594610 610 610 630630 630650 650 650
BB – 3″tire 340 340340 350 360 340 350 360340 350 360 340350 360345 355 360
BB – 2.6″tire330330330340350330340350330340350330340350335345350
BB – 2.4″tire320320320330340320330340320330340320330340325335340
HT 102 102102 102 102 102 102 102115 115 115 127127 127140 140 140
CS-29 422 422422 422 422 422 422 422422 422 422 422422 422422 422 422
CS-27.5 412 412412 412 412 412 412 412412 412 412 412 412 412412 412 412
SA 75 7577 77 76.5 77 77 76.577 77 75.5 77 77 75.577 75.5 75.5
WB 1130 11401180 1190 1200 1200 1210 12201215 1225 1235 12351245 12551255 1265 1275

$2,650.00

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