- For frame sizes 525, 570 and 600 use the 46mm rake fork
- For frame sizes 495 and 555S use the 55mm rake fork

Frame accepts 28.6mm clamp-on front derailleur, deep-drop 47/57mm Allen key fitting brakes, rear OLN is 132.5mm to accept either 130 or 135mm hubs. Frame will take 32c Schwalbe Supreme tyre with mudguards. Thorn 858 double butted seamless cro-mo tube, one set of bosses on rear triangle for racks or mudguards, down-tube bosses accept either stops or Shimano down-tube levers but not Campagnolo.

Includes:
- 1 1/8" (28.6mm) Orbit XL2 threadless headset
- 27.2mm alloy micro adjust seatpost
- Bottom bracket cable guide

Frame weight is 2.3kg (average). Click on the XL image to see the size matrix, view at maximum magnification.

NOTE: Does not include: fixing screws, down tube cable stops or bottom bracket.

Specification

Downloads

Download File

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Questions & Answers (3)

is the bottom bracket threted in the british way?

By anastasiadis vasilios

01 Dec 2017

SJS Customer Service:

Hi,

Yes all Thorn frames are English threaded.

Thanks

Headset

By chris preston

09 Nov 2017

Is the headset and fork crown race fitted as shown in the pictures ?

SJS Customer Service:

Hi,

The headset and crown race do come pre-fitted as shown.

Thanks.

Thorn Audax

By Rob

05 Dec 2016

Does The Thorn Audax Frame Set Require Any Prep Before Assembly. I've Read That The Bottom Bracket Shell Needs Chasing And Facing On Some Builds?
This will be my first self build.

SJS Customer Service:

Hi,

When purchasing new frames we do always recommend also purchasing our Frame Workshop Prep which is SJSC part number 23407.

Thanks.