Santa Cruz Bicycles Bronson 4 MX - Full Suspension Carbon Mountain Bike
Santa Cruz Bicycles Bronson 4 MX - Full Suspension Carbon Mountain Bike

If in doubt, take a Bronson out

You know what’s hard about choosing what model of Santa Cruz suits you? It’s having to narrow down what kind of riding you want to do. But what if you don’t want to be pinned down by labels? What if you want to just be a mountain biker in the broadest sense of the word? What if you want to choose how you ride rather than what to ride? If this sounds familiar, then try a Bronson.

Our demo crew have a saying, ‘If in doubt, take a Bronson out’. The 150mm-travel bike can go deep on any landing and the VPP™ suspension design makes sure that there’s no wasted energy when heading back up for another go.

If you value style at speed or want to have fun feeling fast, then mixed wheels (29” up front, 27.5” out back) show that the spectrum is a loop not opposite points on a scale. The larger front wheel provides more traction and stability that’ll make you feel more confident squaring off the turns and diving for the inside lines. But a 27.5-inch tire in the rear means this bike still loves getting up on the back wheel and into the air.

From flat out on the trail to fully flat over a table, each generation of Bronson rider redefines expectations of what a mountain biker is.

  • Thrasher in need of a micro-machine? Check out the 5010
  • Big fan of the Bronson but want pedal-assist? Check out the Heckler eMTB
  • Love the Bronson and want to see what Juliana has to offer? Check out the Roubion
  • Proud owner of a Bronson? Find all the Rider Support info you need to keep enjoying it

Key Features:

Available in: Carbon C and Carbon CC
Wheel Size: MX
Front Travel: 160mm
Rear Travel: 150mm

Search icon
Santa Cruz Dealer Logo: Mike's Bikes
Santa Cruz Dealer Logo: Evo
Santa Cruz Dealer Logo: Competitive Cyclist


Reach 405430455475500
Stack 594617626635649
Head Tube Angle 64.7°64.7°64.7°64.7°64.7°
Seat Tube Length 370380405430460
Front Center 722757786811842
BB Height 344344344344344
BB Drop 1029/1029/1029/1029/10
Wheelbase 11491188122112491284
Rear Center 427431435438442
Head Tube Length 110100110120135
Top Tube Length 536570599623653
Seat Tube Angle 77.6°77.2°77.1°76.9°76.7°
Standover Height 701709731729728



Frame Sizing

If you're on the cusp between the recommended height range of two sizes, the absolute best thing is to try to ride them both. At a minimum, check the stack/reach measurements on your current bike and compare it to the new model you are looking at to get an idea of a fit you are already comfortable with. If riding the bike is not an option, consider the following.

Personal Preference

A larger size frame will be more stable, and will give you more room to move without upsetting the weight-balance of the bike. The larger size will put the front wheel further in front of you, which gives the feeling of security and conversely, it will require more significant body movements when you WANT to shift the weight-bias of the bike. Think hard about your riding style and how active/intuitive you want it to be vs stable and speedy. You'll need to work a bit harder to muscle the larger bike around.

Body Dimension

Not all bodies at a given height are the same. If you have longer legs and a shorter torso than the average person your height, that may push you towards the smaller of the recommended sizes. If you're all torso and arms, most likely you'll want to size up.



142 - 155cm
142 - 155cm


155 - 165cm
155 - 165cm


165 - 175cm
165 - 175cm


175 - 185cm
175 - 185cm


185 - 196cm
185 - 196cm


Veronique Sandler riding the new Bronson MX
Riding the Bronson in the forest
Digging at the dirt jumps with the new Bronson
Jumping the Bronson mixed wheel mountain bike
Veronique Sandler on mountain bike trails on the Bronson
Veronique Sandler riding the new Bronson MX
Search icon

Design Details

Upper link and shock with 150mm of travel