Grizzly Fat Bike

Overview Design Geometry Details Finishes Ordering

A remarkably-agile fat bike in buttery Titanium. We designed the Grizzly to have handling that shines on both snow and dirt, with elegant and purposeful lines. The bike maximizes the 177mm fat-bike standard, with clearance for 4.6" tires on 80mm rims, extremely short chainstays for playfulness, a low bb for stability, and a head angle that balances precise steering with sure-footedness when the trail points down.


The Grizzly's foundation is a wide T47 bottom bracket shell that maximizes rear-end stiffness and tire clearance. The drive-side chainstay is dropped via a 6/4 titanium plate and supporting fin; this creates the clearance for large 4.6" tires and chainrings from 28-32 teeth, despite the industry-leading short rear-center.

The Grizzly's main triangle is made from oversized and shaped 3/2.5 titanium to create a ride that is both lively and precise.


Rise Bikes Grizzly Titanium Fat Bike Geometry

Metric Size M L
Top Tube (T) 605mm 625mm
Seat Tube (S) 445mm 460mm
Seat Angle (s) 73.5° 73.5°
Head Tube (H) 125mm 140mm
Head Angle (h) 69° 69°
BB Drop (B) 62mm 62mm
Chainstay (C) 425mm 425mm
Fork Length (F) 483mm 483mm
Fork Offset (O) 51mm 51mm
Wheelbase (W) 1111mm 1132mm
Reach (R) 422mm 438mm
Stack (St) 612mm 626mm

Frame Details

  • 30.9mm Seatpost (34.9mm Rise Titanium seat collar)
  • Screw-on cable guides (under-side of top tube)
  • Tapered 44/56mm head tube for ZS headset (1.125-1.5 fork)
  • T47 Bottom Bracket
  • 177mm rear spacing, Syntace dropout
  • 3D-Printed Polished Sterling Silver head badge
  • Handmade in the Front Range of Colorado


We can accommodate a range of finish requests, with various choices for the frame's overall texture, and for the contrasting logos. Our favorite is a bright-brushed frame finish with polished logos. We can also give the frame a satin media-blasted finish with brushed or polished logos. If you like, we can add custom logos to your frame to make it even more unique, and/or combine the finish textures with anodizing to create some color. Let us know what you have in mind and we'll try to make it a reality.


Each Rise Grizzly frame is handmade in the Front Range of Colorado. We sell the Grizzly as a complete bike, with a wide range of components options. We'll work with you and your budget to ensure that the build meets your needs, and excites your imagination. Pricing is $7995 for a complete bike with an awesome component kit made of: Sram X01-Eagle drivetrain / RaceFace cockpit / IndustryNine wheels. Send us an email, or give us a call to talk about your dream bike (phone number in footer).

Rise Bikes Grizzly Titanium Fat Bike Winter Snow