Stack and reach
How high and how far forward the top of the head tube is, from the bottom bracket. They are the two numbers that decide whether a frame can be set up like yours.
BB, or bottom bracket
The axle your cranks turn on, in the middle of the frame. Every number on this site is measured from it, because it is the one point that sits in the same place on every bike.
Headset cover
The little cap on top of the head tube, under your spacers. Most makers do not publish it, so I assume 15 mm and add 6 mm to the band, which on its own is enough to hold an answer at "probably" rather than "fits".
Stem clamp, and its centre
The collar on the steerer that your stem bolts to. I need the middle of it. Where a maker gives only the height, I assume halfway up and say so on the answer.
Steerer
The tube coming up out of the fork. The cover, the spacers and the stem all sit on it, and it is the thing a mechanic cuts to length.
Bar reach
How far forward the hoods sit from the middle of the bar. Two bars on the same stem can put your hands 20 mm apart, which is why I ask.
Setback
How far your saddle sits behind the bottom bracket.
Drop
How much lower your hands sit than your saddle. On a riser bar I count the bar's rise, so the drop is that much less than it is to the clamp.
Rails, and the rail centre
The two rods under your saddle, and the middle of the straight part of them. That midpoint is the point I use, because it is the one you can find with a tape.
The band
How far out I could be, in millimetres, and why. It is a straight sum of everything I had to assume rather than a clever average, so it errs wide on purpose.
wb, stand, trail
Wheelbase, standover and trail: how long the bike is, how high the top tube is where you straddle it, and how steady the steering feels. I show them against your bike, and I leave them out when the maker does not publish them.
est.
Estimated: a number I worked out rather than read off the maker's table. Anything marked this way can move if the maker publishes the real one.
Close Escape closes it. The measuring guide has the pictures. Open the measuring guide
Dengfu R02
Road · 7 sizes
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This is the bike I ride
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- Bike
- Dengfu R02 · Road · 7 sizes
- Geometry
- dengfubike.com, fetched 20 Oct 2026, re-checked, no differences
- Cockpit
- Generic stem and bar, assumed
- Solved with
- cover 15 mm (assumed), max spacers 40 mm (assumed), stem clamp centre 20 mm (assumed), so every verdict carries ±10 mm at the bar
- Sheet
- 22 October 2026 · 686 bikes, 74 makes, 3,984 sizes in the catalogue
Geometry, every size, from the maker's table
The tinted row is the size drawn beside it. Press a size to draw it.| Size | Stack (mm) | Reach (mm) | Head angle (deg) | Seat angle (deg) | Head tube (mm) | Chainstay (mm) | Wheelbase (mm) | Standover (mm)not published |
|---|---|---|---|---|---|---|---|---|
| 48cm | 508 | 374 | 71 | 74.5 | 110 | 405 | 972 | |
| 50cm | 517 | 381 | 72 | 74.5 | 115 | 405 | 973 | |
| 52cm | 523.5 | 384 | 72.5 | 74 | 120 | 405 | 975 | |
| 54cm | 541 | 385 | 73 | 73.5 | 136 | 405 | 975 | |
| 56cm | 578 | 394.5 | 73 | 73.5 | 155 | 405 | 990 | |
| 58cm | 579 | 398 | 73.5 | 73 | 175 | 405 | 995 | |
| 60cm | 598 | 401.5 | 73.5 | 72.5 | 195 | 405 | 1004 |
The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The 54cm drawn to scale from the table, with no build on it. Stack and reach run from the bottom bracket to the top of the head tube; every size is solved from those two. One square is 100 mm.
The maker's cockpit
No stock cockpit I can name, so every size is solved on a generic stem and bar unless you choose one on the sheet.Generic stem and barAssumedNo bar is listed for this frame.
Stock stem and bar per size48cm 80 x 400, 50cm 90 x 400, 52cm 100 x 420, 54cm 100 x 420, 56cm 100 x 420, 58cm 110 x 440, 60cm 120 x 440 (stem length x bar width, mm)
Frame facts
read from the maker's words, not a table: dengfubike.com- Tyre clearance
- not recorded yet
- Bottom bracket
- not recorded yet
- Axles and brakes
- not recorded yet
- UDH
- not recorded yet
- Seatpost
- 27.2 mm round
- Frame weight
- not recorded yet
In the maker's words
Kept whole, as I read it off dengfubike.com.SOLD AS A FRAMESET: the R02 DISC FRAME includes "frame, fork, seatpost, seat clamp, headset, thru axles" (USD 555) and the R02 FRAME "frame, fork, seatpost, seat clamp, headset" (USD 495); no bar or stem.
Cockpit and seatpost, in the maker's words · 124 words
SOLD AS A FRAMESET: the R02 DISC FRAME includes "frame, fork, seatpost, seat clamp, headset, thru axles" (USD 555) and the R02 FRAME "frame, fork, seatpost, seat clamp, headset" (USD 495); no bar or stem. The geometry tab's HB and STEM rows (HB 400/400/420/420/420/440/440 mm, STEM 80/90/100/100/100/110/120 mm for 48-60cm) carry the footnote "*The size of the HANDLEBAR (HB) and STEM is optional according to your requirement. If need, please note when placing the order.", i.e. the per-size fitment of the complete R02 bikes; they are recorded as stock_bar_width and stock_stem_length. Headtube "Tapered, 1 1/8"-1 1/2"", so any 1 1/8 in stem fits; cable routing internal (Di2 compatible), not through the headset. Seatpost Toray T700 carbon, 27.2 mm round, 350 mm; offset not published.
SOURCE: www.dengfubike.com is Dengfu's own Shopify store ("DENGFU Affordable carbon bikes"). Source: html table (maker's own Shopify store, GEOMETRY tab is a real HTML table; the letter legend was read from the diagram image
How I read the maker's table
The rim-brake page https://www.dengfubike.com/products/r02-frame and the disc page https://www.dengfubike.com/products/r02-disc-frame carry the IDENTICAL geometry table (rows SIZE, A, REACH, STACK, B, C, D, E, F, H, I, J, FC, WB, HB, STEM x 48/50/52/54/56/58/60cm) and the same diagram, so they are one file. COLUMN LEGEND (from the diagram): A = seat tube, BB centre along the tube to the top of the seat tube (seat_tube_length); B = seat tube, BB centre to the top tube junction (420-540, not a schema field); C = top tube drawn horizontal from the seat tube line to the head tube line (top_tube_effective); D = head tube length; E = fork length 370 every size (not a schema field); F = head angle; H = BB drop below the axle line (69 every size); I = seat angle, at the BB between the horizontal and the seat tube; J = chainstay, BB centre to rear axle (405 every size); FC = front centre, BB centre to front axle; WB = wheelbase; STACK and REACH drawn from the BB centre to the top of the head tube (dashed horizontal from the head tube top), the conventional frame datum. Fork offset, standover and trail are NOT published (null). PROBABLE MAKER TYPO, kept as printed: 56cm STACK 578 (54cm 541, 58cm 579): reach + stack / tan(73.5) gives 565.7 for the printed 578 against the printed top tube C 560, while every other size closes within 1 mm, so 578 is very likely a slip for about 560; the seat angle check will flag it. Category: a round-tube lightweight race frame (rim brake 700x25C max; disc 700x25C max per the disc page). MODEL YEAR: not stated; the diagrams were uploaded in 2019 (Shopify v=1567042911) and the products were created 2019-07; model_year null. Size labels exactly as the table (48cm-60cm). Bike Insights lists no R02 (brand page read 2026-10-20). No Panda Podium, Geometry Geeks or 99 Spokes request was made.
Source: html table (maker's own Shopify store, GEOMETRY tab is a real HTML table; the letter legend was read from the diagram image https://cdn.shopify.com/s/files/1/0245/4929/4185/files/R02_DISC_GEOMETRY_2048x1148_da87b25d-b8d0-4033-8475-4e35c8d6a176.png on the same page and the identical R02_GEOMETRY image on the rim-brake page; images NOT stored)
