Specialized S-Works Tarmac SL8 - SRAM Red eTap AXS

A race-focused road bike from 2024, made in 7 sizes from 44 to 61.

Size

Stack 552 mmReach 381 mm

Geometry

Specialized S-Works Tarmac SL8 - SRAM Red eTap AXS geometry by frame size
Size
Fit
Stack (mm)How high the front sits	509	522	535	552	573	599	620
Reach (mm)How far forward the bars start	363	372	377	381	393	400	406
Stack ÷ reach Higher = more upright	1.40	1.40	1.42	1.45	1.46	1.50	1.53
Top tube (effective) (mm)Horizontal top-tube length	495	507	530	539	563	577	596
Seat tube angle Saddle position over the pedals	75.5°	75.5°	74°	74°	73.5°	73.5°	73°
Seat tube length (mm)Frame size reference	433	445	456	473	494	515	545
Head tube length (mm)Front-end height	99	109	120	137	157	184	204
Standover (mm)Clearance when you stop	723	735	746	768	786	808	834
Handling
Head tube angle Steeper = quicker steering	70.5°	71.8°	72.5°	73°	73.5°	73.5°	74°
Fork offset (mm)Fork rake	47	47	47	44	44	44	44
Trail (mm)More = steadier steering	71	63	58	58	55	55	52
Wheelbase (mm)Longer = more stable	970	973	975	978	991	1006	1013
Chainstay (mm)Shorter = snappier	410	410	410	410	410	410	410
BB drop (mm)More = lower centre of gravity	74	74	74	72	72	72	72
BB height (mm)Pedal clearance in corners	262	262	262	264	264	264	264
Front centre (mm)Room for your toes	572	574	577	579	592	606	613

Underlined values are calculated by BikeLens. A dash means the brand doesn't publish it.

A low, stretched position built for speed. Suits flexible riders who like to ride fast.

Size 54 is more upright than 57% of the 218 road frames we track.

The closest road frames from other ranges, against size 54 here.

Bikes with a similar fit, compared with size 54 of this bike
Bike	Size	Stack	Reach
Merida SCULTURA RIM 1002026Stack +3 mm, reach +5 mm	SM/MD	+3 mm	+5 mm
Trek Madone SL 5 Gen 82027Stack −6 mm, reach +3 mm	MD	−6 mm	+3 mm
MMR Grip 002026Stack +3 mm, reach +2 mm	M	+3 mm	+2 mm
Cervelo R52026Stack −7 mm, reach +2 mm	54	−7 mm	+2 mm
Giant Propel Advanced 12027Stack −6 mm, reach +7 mm	M	−6 mm	+7 mm
Giant TCR Advanced SL 0 DA2025Stack −7 mm, reach +7 mm	M	−7 mm	+7 mm

These builds share this exact geometry, so they fit the same.

8 more