
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
Surly is a steel-bike brand started in 1998 under Quality Bicycle Products in Minnesota. It is known for touring, fat, and gravel frames with long-term parts support rather than annual carbon refreshes. This page has Surly’s gravel, hybrid, and mountain charts. Disc Trucker and Karate Monkey use different size runs. Steel touring geometry is its own fit — read stack and reach, not just the number.
Official website →Height ranges compared
Used sizes share one height scale, so overlapping and identical ranges are visible before you read a single table.
Height ranges on this page, from 148 to 204 cm. 46: 152–163 cm. 50: 161–170 cm. 54: 168–178 cm. 56: 175–185 cm. 58: 183–193 cm. 62: 190–200 cm.
Height ranges on this page, from 148 to 202 cm. XS: 152–163 cm. S: 161–170 cm. M: 168–178 cm. L: 175–188 cm. XL: 186–198 cm.
Height ranges on this page, from 153 to 204 cm. S: 157–170 cm. M: 168–180 cm. L: 178–190 cm. XL: 188–200 cm.
Pick the category that matches the bike, then confirm the exact model.
| Size | Height | Inseam |
|---|---|---|
| 46 | 152-163 cm | 69-75 cm |
| 50 | 161-170 cm | 74-79 cm |
| 54 | 168-178 cm | 78-83 cm |
| 56 | 175-185 cm | 82-87 cm |
| 58 | 183-193 cm | 86-91 cm |
| 62 | 190-200 cm | 90-95 cm |
Size
46
Height
152-163 cm
Inseam: 69-75 cm
Size
50
Height
161-170 cm
Inseam: 74-79 cm
Size
54
Height
168-178 cm
Inseam: 78-83 cm
Size
56
Height
175-185 cm
Inseam: 82-87 cm
Size
58
Height
183-193 cm
Inseam: 86-91 cm
Size
62
Height
190-200 cm
Inseam: 90-95 cm
| Size | Height | Inseam |
|---|---|---|
| XS | 152-163 cm | 69-75 cm |
| S | 161-170 cm | 74-79 cm |
| M | 168-178 cm | 78-83 cm |
| L | 175-188 cm | 82-88 cm |
| XL | 186-198 cm | 87-93 cm |
Size
XS
Height
152-163 cm
Inseam: 69-75 cm
Size
S
Height
161-170 cm
Inseam: 74-79 cm
Size
M
Height
168-178 cm
Inseam: 78-83 cm
Size
L
Height
175-188 cm
Inseam: 82-88 cm
Size
XL
Height
186-198 cm
Inseam: 87-93 cm
| Size | Height | Inseam |
|---|---|---|
| S | 157-170 cm | 72-78 cm |
| M | 168-180 cm | 77-83 cm |
| L | 178-190 cm | 82-88 cm |
| XL | 188-200 cm | 87-94 cm |
Size
S
Height
157-170 cm
Inseam: 72-78 cm
Size
M
Height
168-180 cm
Inseam: 77-83 cm
Size
L
Height
178-190 cm
Inseam: 82-88 cm
Size
XL
Height
188-200 cm
Inseam: 87-94 cm
Helmet, 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
View on AmazonPrice and availability on Amazon

Kryptonite
Hardened U-lock plus a cable for wheels or a locked-together pair.
Fits most road, gravel, and hybrid frames
View on AmazonPrice and availability on Amazon

CamelBak
Insulated squeeze bottle for everyday rides.
Fits a standard ~73 mm cage
View on AmazonPrice and availability on Amazon

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
As an Amazon Associate we earn from qualifying purchases. Affiliate disclosure.
Height filters the chart. Cycling inseam decides which overlapping size to keep. The method is the same for every brand.
Height
Take shoes off and stand tall, looking straight ahead. A helper should rest a flat object on the crown of your head, then run a tape from the floor to the underside of that object. Save the number in inches and centimeters — charts use both.
Inseam
Stand tall and barefoot with feet slightly apart. Ask a helper to measure vertically from your crotch to the floor. Keep your legs straight and feet flat.
Need the full sequence, including between-size rules? See how to choose a bike size.
Use your height on the Gravel, Hybrid and Mountain charts on this page. On the gravel table, 161-163 cm sits in both 46 and 50. Cycling inseam and standover pick the side. Then check stack and reach for the exact Surly model.
Not safely. Surly Gravel, Hybrid and Mountain charts on this page are separate. A Surly 46 on the gravel table and a Surly XS on the hybrid table are not interchangeable.
The Gravel, Hybrid and Mountain charts on this page include 46, 50, 54 (152-200 cm on the gravel table). Verify the current Surly model chart on the official site before purchase.
Sources
Brand-level ranges on this page are compiled from published size data. Confirm the current model chart before you buy.
Related charts
Bike size chart
General height and inseam ranges before you lock a brand label.
Gravel bike size chart
Compare Surly gravel sizing against general gravel fit ranges.
Hybrid bike size chart
Compare Surly hybrid sizing against commuter and fitness bike ranges.
Mountain bike size chart
Compare Surly MTB sizing against trail and hardtail fit ranges.
All brand size charts
Compare this brand with other bike brand size charts.
How to choose a bike size
Measure height and cycling inseam, then confirm standover and reach.