2025 Bulls Trail Grinder Base

	S	M	L	XL
Stack	575mm	599mm	626mm	649mm
Reach	381mm	398mm	407mm	424mm
Stack to Reach Ratio	1.51:1	1.51:1	1.54:1	1.53:1
Seat Tube Length, C-T	450mm	470mm	510mm	550mm
Top Tube Length, Effective/Horizontal HT Top	546mm	570mm	587mm	610mm
Top Tube Slope	15.8deg	15.6deg	13.9deg	11.8deg
Head Tube Angle	71deg	71deg	71deg	71deg
Seat Tube Angle	74deg	74deg	74deg	74deg
Bottom Bracket Drop	70mm	70mm	70mm	70mm
Bottom Bracket Height	286mm	286mm	286mm	286mm
Chainstay Length	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	414.1mm	414.1mm	414.1mm	414.1mm
Front-Center	606.9mm	631.8mm	650.7mm	674.5mm
Front-Center Horizontal	602.9mm	627.9mm	646.9mm	670.9mm
Wheelbase	1017mm	1042mm	1061mm	1085mm
Fork Offset/Rake	45mm	45mm	45mm	45mm
Trail	75mm high	75mm high	75mm high	75mm high
Mechanical Trail	70.9mm	70.9mm	70.9mm	70.9mm
Wheel Flop	23.1mm	23.1mm	23.1mm	23.1mm
Tire to Pedal Spindle	80.9mm 170 mm cranks	105.8mm 170 mm cranks	124.7mm 170 mm cranks	148.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Category Trend

Source:https://www.bulls-bikes.com/gb-en/product/bulls-trail-grinder-2024-diamant?FARB=FARB_LCRML7FD&RHOE=RHOE_00000600

Geometry