Name: 2026 J Guillem Arta Base
Brand: J Guillem

	52	54	56	58	60
Stack	564mm	583mm	600mm	619mm	636mm
Reach	369mm	367mm	378mm	385mm	387mm
Stack to Reach Ratio	1.53:1	1.59:1	1.59:1	1.61:1	1.64:1
Seat Tube Length, C-T	445mm	465mm	485mm	505mm	525mm
Seat Tube Length, C-TTT	490mm	510mm	530mm	550mm	570mm
Top Tube Length, Effective/Horizontal Center	531mm	540mm	558mm	574mm	587mm
Top Tube Slope	15.5deg	15.4deg	14.7deg	14.3deg	14deg
Head Tube Angle	72deg	72deg	72.5deg	72.5deg	73deg
Seat Tube Angle	74deg	73.5deg	73.25deg	73deg	72.5deg
Head Tube Length	135mm	155mm	170mm	190mm	210mm
Bottom Bracket Drop	75mm	75mm	75mm	75mm	75mm
Bottom Bracket Height	271mm	271mm	271mm	271mm	271mm
Chainstay Length	443mm	443mm	443mm	443mm	443mm
Chainstay Length Horizontal	436.6mm	436.6mm	436.6mm	436.6mm	436.6mm
Front-Center	586mm	590mm	600mm	613mm	626mm
Front-Center Horizontal	570.4mm	574.4mm	585.4mm	598.4mm	611.4mm
Wheelbase	1007mm	1011mm	1022mm	1035mm	1048mm
Fork Offset/Rake	40.4mm	40.3mm	39.9mm	39.9mm	50.6mm
Trail	69.9mm high	70.1mm high	67.2mm high	67.2mm high	52.9mm mid/neutral
Mechanical Trail	66.5mm	66.7mm	64.1mm	64.1mm	50.6mm
Wheel Flop	20.6mm	20.6mm	19.3mm	19.3mm	14.8mm
Standover Height	763mm	779mm	797mm	813mm	830mm
Tire to Pedal Spindle	70mm 170 mm cranks	74mm 170 mm cranks	84mm 170 mm cranks	97mm 170 mm cranks	110mm 170 mm cranks
Pedal Spindle to Ground Clearance	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 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.jguillem.com/en/bikes/arta

2026 J Guillem Arta Base

Geometry