Ensuring that your new bike is properly fit to you is an important step in preparing for your first ride.  Your Authorized Specialized Retailer will be able to provide a basic fit, ensuring that you are able to ride your bike comfortably and efficiently. Specialized also offers Retül Fit, a data-driven bicycle fitting tool designed to improve comfort, prevent injury, and increase performance.

Adjust the saddle height

The correct saddle height is crucial for pedaling efficiency and comfort. 

Estimate your Stumpjumper bike size and saddle height here


The Alloy and Carbon frames have different seatpost minimum and maximum insertion requirements. Check the table below that applies to your frame.


The Stumpjumper carbon frame requires a minimum seatpost insertion of 80mm. Maximum insertion is size-specific. The frame is designed for a 34.9 seatpost and 38.6mm clamp. Torque the seat clamp to 55 in-lbf (6.2Nm).

SizeMaximum Insertion
S1220mm
S2220mm
S3240mm
S4260mm
S5280mm
S6300mm


The Stumpjumper Alloy frame requires a minimum seatpost insertion of 100mm. Maximum insertion is size-specific. The frame is designed for a 34.9 seatpost and 38.6mm clamp. The clamp bolt should face forward and be torqued to 6.2Nm (55in/lbs).

SizeMaximum Insertion
S1190mm
S2190mm
S3210mm
S4230mm
S5250mm
S6270mm


Adjust the reach

If your bike is the correct size, you should be able to comfortably reach the handlebars with your elbows slightly bent. Your bike saddle can move back and forth on the rails–start with it centered and fine tune as needed. A professional bike fitter will set this position to line up your knee with the pedal axle. You can also adjust your reach by raising or lowering your handlebar height, and by increasing or decreasing the length of your bike stem.


Alloy Trail Stem

A new alloy trail stem is used on the Stumpjumper Base, Comp and Expert models.  The faceplate torque procedure follows a new pattern requiring the upper bolts to be fully tightened and torqued before tightening the lower bolts. There should be no gap between the stem and the top of the faceplate.