2021 Bulls Grinder Trail Grinder

	49 cm	52 cm	55 cm	58 cm	61 cm
Stack	545mm	575mm	595mm	625mm	660mm
Reach	385mm	387mm	395mm	401mm	402mm
Stack to Reach Ratio	1.42:1	1.49:1	1.51:1	1.56:1	1.64:1
Seat Tube Length, C-T	490mm	520mm	550mm	580mm	610mm
Top Tube Length, Effective/Horizontal Center	536mm	552mm	571mm	592mm	610mm
Top Tube Slope	8deg	8.1deg	7deg	7deg	7.6deg
Head Tube Angle	69.5deg	70.5deg	70.5deg	70deg	71deg
Seat Tube Angle	74.5deg	74deg	73.5deg	73deg	72.5deg
Bottom Bracket Drop	80mm	80mm	75mm	75mm	75mm
Bottom Bracket Height	259mm	259mm	264mm	264mm	264mm
Chainstay Length	440mm	440mm	440mm	440mm	440mm
Chainstay Length Horizontal	432.7mm	432.7mm	433.6mm	433.6mm	433.6mm
Front-Center	617.5mm	620.5mm	635.9mm	652.8mm	660.7mm
Front-Center Horizontal	612.3mm	615.3mm	631.4mm	648.4mm	656.4mm
Wheelbase	1045mm	1048mm	1065mm	1082mm	1090mm
Fork Offset/Rake	50.1mm	50mm	49.3mm	44.4mm	50.1mm
Trail	73.3mm high	67mm high	67.8mm high	76.1mm high	63.7mm mid/neutral
Mechanical Trail	68.6mm	63.2mm	63.9mm	71.5mm	60.3mm
Wheel Flop	24mm	21.1mm	21.3mm	24.5mm	19.6mm
Tire to Pedal Spindle	108.5mm 170 mm cranks	111.5mm 170 mm cranks	126.9mm 170 mm cranks	143.8mm 170 mm cranks	151.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	89mm 170 mm cranks	89mm 170 mm cranks	94mm 170 mm cranks	94mm 170 mm cranks	94mm 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.de/de-de/produkt/bulls-trail-grinder-diamant?FARB=FARB_GL5TZHRM&RHOE=RHOE_55

Geometry