Redline Guide and Serial # info.

2004 Redline Bicycles product line. The first series 1979TS=Nov. With the exception of the three first letters and that it started at 1982TZZ=Sept. A simple guide to help you check the serial number on your old Redline BMX and find out what year it was built and sold. From about that time, depending on the model If you want to know more about the Redline BMX you have, visit our BMX Catalogue website.

By Year/Model

Redline Bmx Serial Number Location

1970's
Redline Squareback First production bike was serial number 100. A low number bike would be early 1974.
By the 500-600 range somewhere begin the 1975's.
1974-1975 Front gusset had no hole
1976-1977 Front gusset had two holes

1978 and 1979 MX-II - 4130 frame and fork. Used the Squareback front end and the now familiar MX-II rear end on early models.

1978 and 1979 Proline - 4130 frame and fork.

1980's
1980
1981 700 MX-II 4130 frame and down tube decals, Vbars and Redline stem, Suntour VX alloy 3 piece cranks.
1981 600 MX-II 4130 frame and down tube decals, Vbars and Redline stem. Only difference from the 700 is the 1 piece
cranks.
1981 520 MX-II 4130 frame and down tube decals, Vbars but cheapo slant stem and Coaster brake Tuff Wheels.
All three came in your choice of Red, White or Blue.

1981
1981 700 MX-II 4130 frame and down tube decals, Vbars and Redline stem. Sugino Maxy-Cross alloy cranks, Suntour seat clamp and hubs, National skinwalls and KKT alloy pedals.
1981 600 MX-II 4130 frame and down tube decals, same as 700 but came with Sugino 4130 1 piece cranks and KKT steel pedals.
1981 520 unknown specs.
All three came in only Blue, Red, black and white. Chrome would come to the lineup in spring 1981.

Late 81/ 82
The new bikes appear in the Oct. 81 issue of BMXA. Since the advertisemnt had to be shot and submitted before print deadline it probably means the bikes were out at the end of summer 81.
They feature the long huge Redline logo in red with white or black trim. As in the earlier years no decal identifying the bikes as 600 or 700 etc is on the bike yet. The new blocky RL logo is on the seat mast sides and headtube.
81/82 PL-20 Carrera uses a Proline frame, flight cranks and still using Vbars.
Available only in Chrome at first with red or blue parts packages.
81/82 700 Now using a first generation MX-III frame which is really a MX-II. Sugino Maxy-Cross cranks. Everything else same for 600.
81/82 600 Now using a first generation MX-III frame which is really a MX-II. 4130 1 piece cranks.
Both available in Chrome, Red, White, Blue or Black.

MX-II vs. Series-III
Early MX-III were the designation for complete MX-IIs from Japan. The first MX-III frames confused people so Redline also called them Series 3, ST (as in ST-20), Series Three etc.
Late 1982 the first Series-III based bikes rolled out the 600a and 700. Here is how to tell if you have a MX-II or Series-III based frame. Bottom Bracket height (center of BB to ground) MX-II, 11 3/8' . MX-III, 10 3/4' Remember wear and tear on the tires and tire design will affect the BB height slighty.
MX-II Top Tube (TT) is 18'
MX-III Top Tube (TT) is 18 3/4'
MX-II weighs @ 4 lbs 8 ounces
Series-III weighs @ 4 lbs 1 ounce (Dont forget to weigh clean with no headset or BB cups in.)
Series-III have larger then normal drilled out holes on the BB (4 holes) and HT (2 holes), which are covered up by the main tubes.

1983
'83 versions of the MX-III bikes were set to arrive in showrooms, October 1982.
Was the first year of the Redline MX-III. Well sorta. Till then all MX 3 series used a MX2 frame according to an interview by Len Weed from BMX Action Dec. 82. Linn Kastan stated in 1983 Redline debuted its first real MX-III. It came as a complete bike Models 700 and 600a and Frame set.
First year the complete bikes had the model (600a etc) on the frameset.
Specs. TT and DT outside diameter was 1 1/4.' Forks 1'. Wheelbase was around 36' BB height was 10 3/4'.
1983 700 - 4130 came complete with Sugino Maxi-cross cranks and Redline stem and Vbars.
1983 600a - 4130 came complete with Sugino 1pc or Sugino GT 3 piece cranks, Mild steel Kusuki Vbar and Sugino alloy and 4130 stem.
Both available in Chrome only. Your choice of black or blue parts.

1984 and into 85
1984 500 A - 4130 Series III frame set (MX-III). Sugino 175 1 piece cranks. Red to Yellow fade decals.
Available in White or Chrome only. (Made in Taiwan)
1984 600 B - 4130 ST-20 (MX-III? ST as in Series Three as in MX-II?) 104A forks (A as in all weld instead of the three spot?).
Available in White or Chrome only. Black with some grey background down tube decal with red Redline. ST-20 on seat tube and not 600b. Vbars and same pads as the 700P. Mostly black with some grey and red Redline written several times.
1984 700 P - 4130 Proline frame, same frame that the Carerra comes with. 101A Tapered forks.
Available in White or Chrome only. PL-20 on seat tube and not 700P. These use a Red to Yellow fade. Bike has 1 piece Sugino 175 cranks.

1985
1985 500 B - Tri Moly. 4130 front, mild steel rear triangle. MX-III type frame. Fully painted finish or all chrome. Econo stem.
Available in all Hazard Yellow (not partial Chrome like the 600 C) or Chrome.
1985 600 C - 4130 Front was painted or chrome, rear was chrome. MX-III frame. Forklifter stems. 1 piece cranks.
Available in Hazard Yellow, White or Chrome. Parts all black and chrome. Rear dropouts are gnurled. (Made in Taiwan)
1985 800 P - 4130 Proline frame and fork. Forklifter stems. 1 piece cranks.
Available in Turquoise/Chrome, Yellow/Chrome and White/Chrome

By Serial Number
Early USA made bikes may have had a code like this:
RA = 81 Then run number is 5 digits.
RB = 82
RC = 83 etc...

**However bikes in the museum throw that formula in the trash** (I will leave it up for now. The second letter may mean something, but its not the formula people have been saying.

RA 04320 - 1982 Redline MX (Made in Japan, Redline Hotdog stamp)
RB XXXXX - 1982 Redline MX-II
RB 01382 - 1984 Redline 102b (May possibly be a 82 or 83) (Redline Hotdog stamp)
RB 01693 - 1982 Proline II (has No gusset behind seat, CS bridge)
RC 01878 - Unknown Year, (maybe 600a) MX-II or III (Redline Oval stamp)
RC 06430 - 1984 Redline 600b
RC 07870 - 1984 Redline MX III (ST-20), (has gusset behind seat, Redline Oval stamp)
RC 07631 - 1984 Redline 600b (Redline Oval stamp)
RC 09325 - 1984 Redline Proline (Redline Oval stamp, CS bridge)
RC 09858 - Unknown Year, Redline Proline (has NO gusset behind seat, Redline Oval stamp, CS bridge)
RC 13645 - 1984 Redline 700p
RE 00533 - 1985 Redline 800p
RH 00726 - 1983 Redline 600a (Redline Oval stamp, NO CS bridge)
RH 07118 - 1983 Redline 600a
RH 00250 - Unknown Year, Redline 102b
RI 0394X - Unknown Year, Redline MX-II or III (claims top tube is 17' but they only came in @18 and 18 3/4)
RI 05788 - Unknown Year, Redline MX-II or III
RJ 00829 - Unknown Year, Model
RJ 02630 - Unknown Year, Model
RJ 03295 - Unknown Year, Model
RJ 05818 - 1980 MX-III (MX-III was a MX II frameset sold as a complete bike that came from Japan)

9 Digits, Letters and numbers
WA9F01870 (1999, June)
WN0C05414 (2000, March) Redline 340
WN0C07804 (2000, March) Redline 340
WV9G05080 (1999, July)

The third number appears to be the year in this case 1999. The letter that follows that may be the month.
This is speculation based on the bikes age.

Someone posted a RMCF80257. Perhaps the C was actually a 0, then it would fit in with the above structure more.

8 - 7 or 6 Digits year stamped
866814 1986 Redline 500c (Redline Oval stamp. Trimoly stamp)

8609340 1986, September, bike number 340. Or maybe a typo and it is supposed to be 8 digits.

85021290 1985 Redline 600c
85050047 1985 and 05 the month
92081262 1992 and 08 the month
92081370 1992 and 08 the month

6 Digits
Some bikes have the Oval Redline stamp and some dont.
Speculation is that if it has the stamp it is made overseas. That isn't confirmed.
118468 (No Info)
341200 (No Info)
346386 (No Info)
370904 (No Info)
373568 (No Info)
494904 (No Info)
496287 (No Info)

109891 1984/85 Redline Proline (700p or PL-20) Frameset

**It is my opinion that these bikes were simply stamped in order, with no date coding put into them. The lower the number the earlier it was made, starting in 1979. Some model years started earlier and this throws off the fluid look. Also some bike owners may confuse the year of the date it was originally purchased with the model year which in some cases could be different**

Vintage Redline Bmx Serial Numbers

340790 1980 Redline Proline (PL-20)
341692 1978-80 Proline (has NO gusset behind seat, NO Redline stamp)
343277 1979 Redline MX-II (has NO gusset behind seat, NO Redline stamp)
348647 1982 Redline MX-II (600 or 700) Frameset.
349470 Unknown Year Redline MX-II or III
350291 1981 Redline Proline 2 (had NO gusset behind seat, and NO CS bridge)
350294 Unknown Year, Redline Proline
354065 Unknown Year, Redline MX-II
357485 Unknown Year, Redline Proline (NO CS bridge)
363127 Unknown Year, Redline Proline (Redline Oval stamp)
375830 Unknown Year, Redline Proline 2 frame (has gusset behind seat, CS bridge, Redline Oval stamp)
375996 1982 Redline Proline 2 (has the gusset behind seat, CS bridge, Redline Oval stamp)
499612 Unknown Year, Redline MX-III frame
502365 1984 Redline MX-III frame (has gusset behind seat, CS bridge, Redline Oval stamp)
502867 Unknown Year, Redline Proline (CS bridge)
505092 Unknown Year, Redline MX-III frame (has gusset behind seat, NO CS bridge, Redline Oval stamp)
507159 Unknown Year, Redline MX-III frame (has gusset behind seat, NO CS bridge, Redline Oval stamp)
510537 Unknown Year, Redline PL-24 (CS bridge)

Redline Bmx Serial Numbers

5 Digits
08453 1978-79 Redline Proline.
15188 Unknown Year Redline Microline