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Road Skewers

Cervelo Threaded Thru-Axle Fork Insert

If you have managed to damage or lose the Threaded Axle Insert for your Cervelo disc brake, threaded thru-axle fork, this may be the part for you. The item consists of the threaded receiver and Hex bolt used to affix it to your fork. While this does fit many threaded thru-axle Cervelo Disc Fork models, see the list below for full compatibility. For Aspero owners or those who require a Cervelo R.A.T. insert, see the notes below.

Machined from aluminum, then finished for durability, this genuine Cervelo part is only for the specified Cervelo fork models and designs. Please do not attempt to use this any other other make or non-specified fork model or system type.


  • Threaded Axle Fork Insert for specified Cervelo disc forks w/ threaded thru-axles
  • Specified for: R3 Disc / R5 Disc (2018+), S3 Disc (2018+), S5 Disc, P5 Disc, P3X, P-Series (this refers to 2019+ frames/bikes named "P-Series", not all P model designs)
  • Includes insert and Hex fixing bolt (black)
  • Not compatible with R.A.T. thru-axle (see Cervelo part# QRI-RAT)
  • May be used to replace R.A.T. system insert when used with QRA-LVR-F thru-axle
  • Choose dual mount version for Aspero forks (see QRI-ASP-THD)
  • Aluminum, precision made genuine Cervelo component with fixing bolt
  • Finish: Black
  • Options: Cervelo part# QRI-THD (R3, R5, Caledonia), QRI-ASP-THD (Aspero)
Cervelo Aspero
Size 48 51 54 56 58 61
Wheel Size 700 700 700 700 700 700
Stack 505mm 530mm 555mm 580mm 605mm 630mm
Reach 370mm 379mm 388mm 397mm 406mm 415mm
Head Angle 71° 71.5° 72° 72° 72° 72°
Seat Angle 74.5° 74° 73.5° 73° 73° 73°
Top Tube Length 512mm 532mm 553mm 575mm 591mm 608mm
Head Tube Length 83mm 107mm 133mm 159mm 188mm 314mm
Standover 690mm 732mm 764mm 788mm 814mm 838mm
Fork Trail 58.6mm 58.6mm 58.6mm 58.6mm 58.6mm 58.6mm
Fork Offset 52mm 49mm 46mm 46mm 46mm 46mm
Bottom Bracket Drop 78.5mm 78.5mm 76mm 76mm 73.5mm 73.5mm
Front Center 583mm 592mm 602mm 619mm 637mm 654mm
Wheelbase 990mm 1000mm 1010mm 1027mm 1046mm 1063mm
Chainstay Length 420mm 420mm 420mm 420mm 420mm 420mm