
Giro
Register II MIPS
Everyday adult helmet with MIPS and a simple dial fit.
Universal Adult, 54–61 cm
View on AmazonPrice and availability on Amazon
Epic is Specialized's cross-country platform and it runs XS to XL. The Epic 8 geometry table publishes reach in a `Reach (low)` row, and the numbers here are that low position, which is the setting the frame ships in.
Epic 8 Comp size finder
Height gives you one size, or two when the published height ranges overlap. Stack, reach, and standover settle the overlap.
Enter your height and the Epic 8 Comp size that covers it is marked in the tables below.
How to measureHeight gives the starting size. Standover and reach confirm it.
Height ranges
Height ranges for every Epic 8 Comp size, 144 to 197 cm overall. XS: 148 to 155 cm. S: 158 to 165 cm. M: 165 to 178 cm. L: 178 to 185 cm. XL: 185 to 193 cm.
Size chart
Rider height is Specialized's published Epic chart. Specialized publishes no rider inseam for this family, so the table shows height only.
XS
4'10"–5'1"
148–155 cm
Smallest Epic frame. Stack is 6 mm higher than S, the only place the ladder steps down.
S
5'2"–5'5"
158–165 cm
Reach jumps 30 mm from XS while stack drops 6 mm, so this step lengthens the cockpit sharply.
M
5'5"–5'10"
165–178 cm
Most riders start here. Stack and reach above are for this size.
L
5'10"–6'1"
178–185 cm
12 mm more stack than M, against 25 mm of extra reach.
XL
6'1"–6'4"
185–193 cm
Tallest Epic 8 frame, with the highest standover at 774 mm.
Start with height. If two sizes overlap, use cycling inseam to choose.How to measure
Geometry
Stack, reach, and standover for every Epic 8 Comp size, read from Specialized's geometry table. Reach is the `Reach (low)` row, the frame's shipped position.
XS
4'10"–5'1"
S
5'2"–5'5"
M
5'5"–5'10"
L
5'10"–6'1"
XL
6'1"–6'4"
XS4'10"–5'1"
S5'2"–5'5"
M5'5"–5'10"
L5'10"–6'1"
XL6'1"–6'4"
If two sizes both fit, compare reach and standover rather than assuming the larger size is more comfortable.
How to measure a bike frameHelmet, light, lock, bottle, and a pant-leg strap. Size the bike here; buy the complete adult bike at a shop.

Giro
Everyday adult helmet with MIPS and a simple dial fit.
Universal Adult, 54–61 cm
View on AmazonPrice and availability on Amazon

NiteRider
Compact USB headlight for commuting and dusk rides.
Handlebar mount, 300 lumens
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Kryptonite
Hardened U-lock plus a cable for wheels or a locked-together pair.
Fits most road, gravel, and hybrid frames
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CamelBak
Insulated squeeze bottle for everyday rides.
Fits a standard ~73 mm cage
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Green Guru
Upcycled inner-tube strap that keeps a pant leg off the chain.
Adjustable hook-and-loop, about 16 in long
View on AmazonPrice and availability on Amazon
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Bike size calculator
Enter your height and inseam for a Specialized mountain bike, then compare the result with this Epic 8 Comp chart.
Sizing notes
Riders with the same height can need different sizes because inseam, torso length, flexibility, and preferred handling differ.
3 checks
Epic reach grows 110 mm from XS to XL while stack grows only 25 mm, so stepping up lengthens the cockpit more than four times as fast as it raises the front end.
Standover barely moves: 748 mm at XS, then 755, 760, 769 and 774 mm. Reach and stack decide the size, not clearance.
Specialized's published Epic chart adds XXL for 191–200 cm, which the Epic 8 Comp frame does not build. Treat 193 cm as the top of this ladder.
Sources
Every number on this page comes from the sources below. Check the exact model year there before you buy.
Data reviewed:
Compare
A size label does not mean the same thing across brands. Compare published geometry before you choose.
Related guides
Once you have a starting size, compare this frame against the Specialized chart and the mountain guide.
Specialized bike size chart
Compare Epic 8 Comp against broader Specialized size guidance.
Mountain bike size chart
Check mountain sizing by height and inseam before choosing a frame.
Questions
Short answers for Specialized Epic 8 Comp sizing.
Start with the Specialized height band: XS for 148–155 cm, S for 158–165 cm, M for 165–178 cm, L for 178–185 cm, and XL for 185–193 cm. Then confirm standover for the size you land on.
No. Epic uses the alpha ladder XS to XL, while Stumpjumper uses S-Sizing with S1 to S6. An S3 is a Stumpjumper size and has no Epic equivalent.
178 cm sits at the top of Specialized's M band of 165–178 cm and at the bottom of the L band of 178–185 cm. M carries 598 mm of stack and 450 mm of reach; L adds 12 mm of stack and 25 mm of reach.
Specialized publishes XXL for 191–200 cm on its Epic chart, but the Epic 8 Comp frame stops at XL. If you are near 193 cm, check the exact trim before assuming an XXL exists.
Specialized publishes Epic M for riders from 165–178 cm (5'5"–5'10"). It carries 598 mm of stack, 450 mm of reach, and 760 mm of standover.