Giro
Register II MIPS
Everyday adult helmet with MIPS and a simple dial fit.
Universal Adult, 54–61 cm
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Cannondale Gravel frame
Cannondale Topstone Size Chart
Topstone Carbon uses Cannondale's centimetre labels from 47 to 61 cm. Topstone Alloy is a different frame with its own ladder, so a Carbon size does not carry to it.
- Frame sizes
- 47–61 cm · 6 sizes
- Rider height
- 4'11"–6'7"
- Height (cm)
- 149–200 cm
- Stack / reach · 54
- 579 / 378 mm
Topstone Carbon 2 GRX 2x size finder
Which Topstone Carbon 2 GRX 2x size covers your height?
Height gives you one size, or two when the published height ranges overlap. Stack, reach, and standover settle the overlap.
ft
in
Enter your height and the Topstone Carbon 2 GRX 2x size that covers it is marked in the tables below.
How to measureHeight gives the starting size. Standover and reach confirm it.
Height ranges
Where each size starts and ends
Height ranges for every Topstone Carbon 2 GRX 2x size, 145 to 204 cm overall. 47: 149 to 167 cm. 51: 165 to 175 cm. 54: 172 to 180 cm. 56: 177 to 185 cm. 58: 182 to 193 cm. 61: 190 to 200 cm.
- 47149–167 cm
- 51165–175 cm
- 54172–180 cm
- 56177–185 cm
- 58182–193 cm
- 61190–200 cm
145 cm175 cm204 cm
Size chart
Topstone Carbon 2 GRX 2x size by height
Rider height is the range Cannondale prints for each Topstone Carbon size, converted from the inches on its product page. Cannondale publishes no rider inseam for this family, so the table shows height only.
Size
Height
Height cm
Inseam
Fit note
47
4'11"–5'6"
149–167 cm
–
Smallest Topstone Carbon frame, with the lowest standover at 716 mm.
51
5'5"–5'9"
165–175 cm
–
Reach grows 9 mm from 47 while stack grows 7 mm, so the cockpit lengthens about as fast as the front end rises.
54
5'8"–5'11"
172–180 cm
–
Most riders start here. Stack and reach above are for this size.
56
5'10"–6'1"
177–185 cm
–
28 mm more standover than 54. The largest step is 58 to 61, at 33 mm.
58
6'0"–6'4"
182–193 cm
–
6 mm more reach than 56, against 18 mm of extra stack.
61
6'3"–6'7"
190–200 cm
–
Tallest Topstone Carbon frame, with the highest standover at 864 mm.
47
4'11"–5'6"
149–167 cm
Smallest Topstone Carbon frame, with the lowest standover at 716 mm.
51
5'5"–5'9"
165–175 cm
Reach grows 9 mm from 47 while stack grows 7 mm, so the cockpit lengthens about as fast as the front end rises.
54
5'8"–5'11"
172–180 cm
Most riders start here. Stack and reach above are for this size.
56
5'10"–6'1"
177–185 cm
28 mm more standover than 54. The largest step is 58 to 61, at 33 mm.
58
6'0"–6'4"
182–193 cm
6 mm more reach than 56, against 18 mm of extra stack.
61
6'3"–6'7"
190–200 cm
Tallest Topstone Carbon frame, with the highest standover at 864 mm.
Start with height. If two sizes overlap, use cycling inseam to choose.How to measure
Geometry
Topstone Carbon 2 GRX 2x geometry by size
Stack, reach, and standover for every Topstone Carbon size, read from Cannondale's published geometry table by its row labels.
Size
Height
Stack
Reach
Standover
47
4'11"–5'6"
554 mm
364 mm
716 mm
51
5'5"–5'9"
561 mm
373 mm
741 mm
54
5'8"–5'11"
579 mm
378 mm
772 mm
56
5'10"–6'1"
597 mm
383 mm
800 mm
58
6'0"–6'4"
615 mm
389 mm
831 mm
61
6'3"–6'7"
646 mm
397 mm
864 mm
47
4'11"–5'6"
- Stack
- 554 mm
- Reach
- 364 mm
- Standover
- 716 mm
51
5'5"–5'9"
- Stack
- 561 mm
- Reach
- 373 mm
- Standover
- 741 mm
54
5'8"–5'11"
- Stack
- 579 mm
- Reach
- 378 mm
- Standover
- 772 mm
56
5'10"–6'1"
- Stack
- 597 mm
- Reach
- 383 mm
- Standover
- 800 mm
58
6'0"–6'4"
- Stack
- 615 mm
- Reach
- 389 mm
- Standover
- 831 mm
61
6'3"–6'7"
- Stack
- 646 mm
- Reach
- 397 mm
- Standover
- 864 mm
474'11"–5'6"
Stack554 mmReach364 mm515'5"–5'9"
Stack561 mmReach373 mm545'8"–5'11"
Stack579 mmReach378 mm565'10"–6'1"
Stack597 mmReach383 mm586'0"–6'4"
Stack615 mmReach389 mm616'3"–6'7"
Stack646 mmReach397 mm
How neighboring sizes compare
If you're 178 cm and fall inside both the 54 and 56 ranges, compare reach and standover rather than assuming the larger size is more comfortable.
How to measure a bike frame- Size stepStackReachStandover
- 47 → 51+7 mm+9 mm+25 mm
- 51 → 54+18 mm+5 mm+31 mm
- 54 → 56+18 mm+5 mm+28 mm
- 56 → 58+18 mm+6 mm+31 mm
- 58 → 61+31 mm+8 mm+33 mm
Starter kit
Helmet, light, lock, bottle, and a pant-leg strap. Size the bike here; buy the complete adult bike at a shop.
NiteRider
Swift 300
Compact USB headlight for commuting and dusk rides.
Handlebar mount, 300 lumens
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Kryptonite
Evolution Mini-7 with 4′ cable
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
Podium Chill 21 oz
Insulated squeeze bottle for everyday rides.
Fits a standard ~73 mm cage
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Green Guru
Narrow pant-leg strap
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
Find your Cannondale Topstone Carbon 2 GRX 2x size
Enter your height and inseam for a Cannondale gravel bike, then compare the result with this Topstone Carbon 2 GRX 2x chart.
Sizing notes
Why height alone is not enough
Riders with the same height can need different sizes because inseam, torso length, flexibility, and preferred handling differ.
3 checks
Topstone Carbon stack climbs 92 mm from 47 to 61 while reach grows 33 mm, so the front end rises almost three times as fast as the cockpit lengthens.
Standover climbs 148 mm across the ladder, from 716 mm at 47 to 864 mm at 61. The largest single step is 33 mm from 58 to 61.
The 58 to 61 step is mostly height: 31 mm of stack and 8 mm of reach. Reach grows only 6 mm from 56 to 58, so if 56 feels right in length, 61 may not be the size you want.
Sources
Confirm the exact bike after you have a starting size
Every number on this page comes from the sources below. Check the exact model year there before you buy.
Data reviewed:
Compare
Compare before buying
A size label does not mean the same thing across brands. Compare published geometry before you choose.
Related guides
More Cannondale and gravel sizing
Once you have a starting size, compare this frame against the Cannondale chart and the gravel guide.
Cannondale bike size chart
Compare Topstone Carbon 2 GRX 2x against broader Cannondale size guidance.
Gravel bike size chart
Check gravel sizing by height and inseam before choosing a frame.
Questions
Topstone Carbon 2 GRX 2x size chart FAQ
Short answers for Cannondale Topstone Carbon 2 GRX 2x sizing.
What size Cannondale Topstone should I ride?
Start with the height band Cannondale prints for each size, in inches: 47 for 4'11"–5'6", 51 for 5'5"–5'9", 54 for 5'8"–5'11", 56 for 5'10"–6'1", 58 for 6'0"–6'4", and 61 for 6'3"–6'7". The centimetre column on this page is those inches converted, and Cannondale publishes no rider inseam for this family.
Is the Topstone Carbon the same size as the Topstone Alloy?
No. Topstone Carbon and Topstone Alloy are different frames with separate geometry tables, so a 54 on one is not a 54 on the other. Confirm stack, reach, and standover on the model you are buying.
What size Topstone fits a 178 cm rider?
178 cm sits inside Cannondale's 56 band of 177–185 cm. It carries 597 mm of stack, 383 mm of reach, and 800 mm of standover; 54 stops at 180 cm and 58 starts at 182 cm.
How tall is a Cannondale Topstone 54 for?
Cannondale prints Topstone Carbon 54 as 5'8"–5'11", which is 172–180 cm converted. It carries 579 mm of stack, 378 mm of reach, and 772 mm of standover.
Does the Topstone Carbon come in a 44?
No. Cannondale builds the Topstone Carbon from 47 to 61 cm, so 47 is the smallest frame. Specialized Diverge does publish a 44, so a size that small exists in gravel but not on this frame.