Santa Cruz Bicycles - 2017 Bronson

Living Up To The Hype

You're on the hunt for information about a previous year of the Bronson, and we're in the process of updating that information. In the meantime...

 

 

 

Key Features:

  • Wheel size: 27.5"
  • Rear travel: 150mm

Geometry & Sizing

Rollover table below to highlight frame dimensions.

All measurements reflect installation of a fork with a 544.4mm axle-to-crown height.

SMLXL
Reach405mm15.94"425mm16.73"445mm17.52"475mm18.7"
Stack586mm23.07"595mm23.43"605mm23.82"614mm24.17"
Head Tube Angle66°66°66°66°66°66°66°66°
Seat Tube Length395mm15.55"420mm16.54"460mm18.11"495mm19.49"
Front Center
BB Height341mm13.43"341mm13.43"341mm13.43"341mm13.43"
BB Drop13mm0.51"13mm0.51"13mm0.51"13mm0.51"
Wheelbase1141mm44.92"1165mm45.87"1189mm46.81"1223mm48.15"
Chainstay Length432mm17.01"432mm17.01"432mm17.01"432mm17.01"
Head Tube Length90mm3.54"100mm3.94"110mm4.33"120mm4.72"
Top Tube Length573mm22.56"596mm23.46"618mm24.33"651mm25.63"
Seat Tube Angle74°74°74°74°74°74°74°74°
Standover Height727mm28.62"731mm28.78"734mm28.9"747mm29.41"
Eye to Eye Length

Frame Sizing

s
5'0"152 — 5'5"165cm
m
5'5"165 — 5'10"178cm
l
5'10"178 — 6'1"185cm
xl
6'1"185 — 6'6"198cm

Tech Support

Can I mount a chainguide to my bike?

Yes, this bike is equipped with ISCG-05 tabs for easy chainguide mounting.  Most chainguides on the market that are made for this standard should work.

Is the 148x12 derailleur hanger the same as the 142x12 hanger?

No, it's not. We had to make a new derailleur hanger to go with the new dropout. They look similar, but the easiest way to tell them apart is the finish. Our 142x12mm hangers have a bead-blasted finish, while the 148x12mm hangers have a smooth, machined finish. 

Should I grease the headset cups when I install them?

Yes, we recommend this. Do not use the Carbon Assembly Compound on the headset, as it will make it more difficult to remove from the frame.

What is the torque spec for the seat collar?

We don't provide a torque spec for the seatpost, because it really depends on what seatpost you are using. Some seatposts are slippery, and require more torque to stay put, and others are very thin- and can be crushed by overzealous tightening. Some are both slippery and thin... Make sure you use the Carbon Assembly Compound included with your frame, and use some common sense.

You will not damage your frame by overtightening the seat collar, assuming you have a 31.6 seatpost in there.

What Kind of Front Derailleur do I Need?

The updated versions of the Bronson, 5010, and Tallboy use Shimano side-swing front derailleurs. The names and part numbers are: 

Shimano XT M8020 Side Swing
Shimano XTR M9020D Side Swing

What kind of rear brake adaptor do I need?

This frame uses a standard IS rear brake mount. Just pick your rotor size and order the correct adaptor to go from IS to post mount (all modern brakes).

What size bottom bracket shell does this bike use?

We use a standard 73mm threaded BB. Nearly any crank on the market (besides BB30 cranks) will fit.

What size seatpost do I need?

This bike uses a 31.6mm seatpost.  Always ensure it is inserted into the frame a minimum of 4" (100mm).