Grizzly Fat Bike 177

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. Taking cues from modern trail bike design, we have made the geometry more forward looking than other fat bikes on the market: short chainstays for playfulness, low bb for stability, long reach and steep seat angle for an efficient pedaling position and to keep your weight centered over the bike, 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 main triangle is made from oversized and shaped 3/2.5 titanium to create a ride that is both lively and precise.

The Grizzly is available with a 177mm or a 197mm rear spacing. On the 177mm frame, 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 197mm frame has symmetric shaped chainstays (a cleft in the drive side stay is made to accommodate the chainring) and can clear full 4.8" tires on 85mm rims. Both frame designs use the "narrow" Q-factor cranks for fat bikes to maintain pedaling efficiency.


Rise Bikes Grizzly Titanium Fat Bike Geometry

Metric Size M L
Top Tube (T) 610mm 634mm
Seat Tube (S) 440mm 460mm
Seat Angle (s) 75° 75°
Head Tube (H) 105mm 120mm
Head Angle (h) 68° 68°
BB Drop (B) 62mm 62mm
Chainstay (C) 430mm 430mm
Fork Length (F) 489mm 489mm
Fork Offset (O) 51mm 51mm
Wheelbase (W) 1111mm 1132mm
Reach (R) 450mm 470mm
Stack (St) 597mm 610mm

Frame Details

  • 30.9mm Seatpost (34.9mm Rise Titanium seat collar)
  • Tapered 44/56mm head tube for ZS headset (1.125-1.5 fork)
  • T47 Bottom Bracket
  • Screw-on cable guides (under-side of top tube)
  • Optional internal dropper seatpost routing
  • Syntace dropouts, 177mm or 197mm rear spacing
  • 3D-Printed Polished Sterling Silver or Bronze 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 $8495 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