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 Most makers do not publish it, so I assume 10 mm and add 6 mm to the band beside every answer.
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 R06
Road · 5 sizes
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This is the bike I ride
No account is needed to read the table. Report a wrong number · Correct this bike
- Bike
- Dengfu R06 · Road · 5 sizes
- Geometry
- dengfubike.com, fetched 20 Oct 2026, read off the maker's chart, re-checked, no differences
- Seat angle convention
- Calculated from Dengfu's table
- Cockpit
- Generic stem and bar, assumed
- Solved with
- cover 10 mm (assumed), max spacers 40 mm (assumed), stem clamp centre 20 mm (assumed), so every verdict carries ±10 mm at the bar
- Sheet
- 23 October 2026 · 879 bikes, 79 makes, 4,979 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 |
|---|---|---|---|---|---|---|---|---|
| 49cm | 510 | 373.4 | 71.5 | 74.5 | 130 | 405 | 967.6 | |
| 52cm | 516.5 | 381.8 | 72 | 74.5 | 135 | 405 | 973.6 | |
| 54cm | 523.7 | 384.8 | 72.5 | 74 | 140 | 405 | 974.5 | |
| 56cm | 543.2 | 385 | 73 | 73.5 | 160 | 405 | 975.2 | |
| 59cm | 558.3 | 395 | 73 | 73.5 | 180 | 405 | 990 |
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 size49cm 80 x 400, 52cm 90 x 420, 54cm 100 x 420, 56cm 110 x 420, 59cm 120 x 440 (stem length x bar width, mm)
Frame facts
not read off the maker's page yet: dengfubike.com- Tyre clearance
- not recorded yet
- Bottom bracket
- not recorded yet
- Axles and brakes
- not recorded yet
- UDH
- not recorded yet
- Seatpost
- not recorded yet
- Frame weight
- not recorded yet
In the maker's words
Kept whole, as I read it off dengfubike.com.SOLD AS A FRAMESET: the R06 DISC FRAME includes "frame, fork, seatpost, seat clamp, headset, thru axles" (USD 535) and the R06 FRAME "frame, fork, seatpost, seat clamp, headset" (USD 489); no bar or stem.
Cockpit and seatpost, in the maker's words · 95 words
SOLD AS A FRAMESET: the R06 DISC FRAME includes "frame, fork, seatpost, seat clamp, headset, thru axles" (USD 535) and the R06 FRAME "frame, fork, seatpost, seat clamp, headset" (USD 489); no bar or stem. The geometry tab's HB and STEM rows (HB 400/420/420/420/440 mm, STEM 80/90/100/110/120 mm for 49-59cm) carry the maker's footnote that the handlebar and stem size is "optional according to your requirement", i.e. the complete bikes' per-size fitment; recorded as stock_bar_width and stock_stem_length. Headtube tapered 1 1/8"-1 1/2"; internal routing, Di2 compatible. Seatpost Toray T700 aero, 350 mm; offset not published.
SOURCE: www.dengfubike.com is Dengfu's own Shopify store. 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/r06-frame and the disc page https://www.dengfubike.com/products/r06-disc-frame carry the IDENTICAL geometry table (rows SIZE, S, SC, SL, O, HS, HC, F, OT, WB, FC, RC, G, STACK, REACH, HB, STEM x 49/52/54/56/59cm), so they are one file. COLUMN LEGEND (from the diagram): S = seat tube, BB centre along the tube to the top of the seat tube; SC = seat angle at the BB between the axle line and the seat tube line; SL = the horizontal setback from the seat tube line to the BB vertical at head tube top height (141-165; SL + REACH = O within 0.6 mm; not a schema field); O = top tube, horizontal (top_tube_effective); HS = head tube length; HC = head angle; F = fork length 370 every size (not a schema field); OT = fork offset 45; WB = wheelbase; FC = front centre, BB centre to front axle; RC = chainstay 405; G = BB drop 69; STACK and REACH from the BB centre to the top of the head tube. Standover and trail are NOT published (null). PROBABLE MAKER TYPO, kept as printed: 49cm FC 527.7 (52cm 578.6, 54cm 579.5): with a 967.6 wheelbase and the 405 chainstay the front centre must be near 577, so 527.7 is very likely a slip for 577.7. SIZES: the store's size menus also offer 46cm (rim) and 44cm and 46cm (disc), which the geometry table does not cover. MODEL YEAR: not stated (diagrams uploaded 2019, Shopify v=1567043010); model_year null. Bike Insights lists "R06 Disc" 2021 with 49/52/54cm only (see cross_check). 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/R06_GEOMETRY_2048x1148_58997029-7e98-4d9b-9f72-4d8006221e90.png on the rim-brake page (the disc page carries R06_DISC_GEOMETRY); images NOT stored)
