Litespeed Arenberg FI (2026)

endurance road · titanium · sizes XS–XL · tyres up to 35 mm Manufacturer’s website

Good to know: Configurable build

Configurable build (at least partly: the cockpit or bar width, for example). The stock build below is only one of the options.

Geometry ?

Litespeed Arenberg FI 2026 geometry in sizes XS–XL: stack 520–640 mm, reach 365–395 mm, head angle 70–72.5°.

	XS	S	M	M/L	L	XL
Stack	520 mm	535 mm	565 mm	590 mm	620 mm	640 mm
Reach	365 mm	370 mm	375 mm	380 mm	385 mm	395 mm
Head angle	70°	70.5°	72°	72.5°	72.5°	72.5°
Seat angle	74.5°	74°	73.5°	73.5°	73.2°	73°
Seat tube (c-t)	430 mm	450 mm	480 mm	510 mm	540 mm	570 mm
Head tube	106 mm	120 mm	148 mm	172 mm	206 mm	228 mm
Top tube (effective)	509 mm	523 mm	542 mm	555 mm	572 mm	591 mm
BB drop	78 mm	78 mm	76 mm	76 mm	74 mm	72 mm
Chainstay	420 mm	420 mm	420 mm	420 mm	420 mm	420 mm
Wheelbase	989 mm	995 mm	996 mm	1004 mm	1020 mm	1037 mm
Standover	695 mm	713 mm	745 mm	772 mm	804 mm	832 mm
Fork offset	47 mm	47 mm	47 mm	47 mm	47 mm	47 mm
Stock build by size
Seatpost setback	20 mm	20 mm	20 mm	20 mm	20 mm	20 mm

Source: litespeed.com, checked 1 Nov 2026 · bar position: worked out from published data

Stock build

Arenberg FI Shimano 105 Di2 12 Spd

Groupset: Shimano 105 Di2 2×12
Shifters: Shimano 105 Di2 ST-R7170
Cranks: Shimano 105 R7100 50-34
Stem: Choose: FSA ACR or ENVE Aero stem
Handlebar: Choose: FSA Energy Alloy Compact / FSA SL-K Carbon Compact / ENVE SES AR Road
Seatpost: FSA Gossamer Alloy 20 mm Offset or Upgrade to Litespeed Titanium

Arenberg FI Shimano Ultegra Di2 12 Spd

Groupset: Shimano Ultegra Di2 2×12
Shifters: Shimano Ultegra Di2 ST-R8170
Cranks: Shimano Ultegra R8100 50-34
Stem: Choose: FSA ACR or ENVE Aero stem
Handlebar: Choose: FSA Energy Alloy Compact / FSA SL-K Carbon Compact / ENVE SES AR Road
Seatpost: FSA SLK Carbon 20 mm Offset or Upgrade to Litespeed Titanium

Arenberg FI Shimano Dura-Ace Di2 12 Spd

Groupset: Shimano Dura-Ace Di2 2×12
Shifters: Shimano Dura-Ace Di2 ST-R9270
Cranks: Shimano Dura-Ace R9200 50-34
Stem: Choose: FSA ACR or ENVE Aero stem
Handlebar: Choose: FSA Energy Alloy Compact / FSA SL-K Carbon Compact / ENVE SES AR Road
Seatpost: Litespeed Titanium Seatpost Included

Options when ordering (manufacturer’s default in bold):

Size	Cockpit	Stem	Bar width
all	stem FSA ACR + bars FSA Energy Alloy Compact stem FSA ACR + bars FSA SL-K Carbon Compact stem FSA ACR + bars ENVE SES AR Road stem ENVE Aero + bars FSA Energy Alloy Compact stem ENVE Aero + bars FSA SL-K Carbon Compact stem ENVE Aero + bars ENVE SES AR Road	80, 90, 100, 110, 120 mm	400, 420, 440 mm

Source for all builds: litespeed.com, checked 1 Nov 2026

Frames with similar geometry

Stack and reach within 12 mm of size M/L (stack 590 / reach 380 mm).

Spotted a mistake or a missing build? Let me know.