Reach Adjust EC44-ZS56 - To Suit 1 1/8" Steerer - 5mm
Reach adjust headset offering +/-5mm adjustment. Designed for frames with a 44mm upper and 56mm lower internal headtube using a 1 1/8" steerer tube. CNC-machined in-house in the UK from 6082-T6 aluminium and finished with a durable anodise finish.
Reach Change: +/- 5mm
Fits Headtube Internal Diameter: Upper - 44mm: EC44
Fits Headtube Internal Diameter: Lower - 56mm: ZS56
Upper Cup Insertion Depth: 9mm
Lower Cup Insertion Depth: 14mm
Upper Cup Stack Height: 11mm - Total upper stack height including bearing cover: 15mm
Lower Cup Stack Height: 3.5mm
Upper Bearing: 41mm OD, 45 x 45 Degree AC sealed bearing
Lower Bearing: 41mm OD, 45 x 45 Degree AC sealed bearing
Fork Steerer Tube Size: 1 1/8"
Material: 6082-T6 aluminium
Finish: Anodised
Headset comes complete with top-cap (starnut included), bearings and crown race - all parts required for fitment.
We use the 'SHIS' standard to label our headsets - For SHIS info please refer to the Park Tools information page - Standardized Headset Identification System | Park Tool










Description
Reach adjust headset offering +/-5mm adjustment. Designed for frames with a 44mm upper and 56mm lower internal headtube using a 1 1/8" steerer tube. CNC-machined in-house in the UK from 6082-T6 aluminium and finished with a durable anodise finish.
Reach Change: +/- 5mm
Fits Headtube Internal Diameter: Upper - 44mm: EC44
Fits Headtube Internal Diameter: Lower - 56mm: ZS56
Upper Cup Insertion Depth: 9mm
Lower Cup Insertion Depth: 14mm
Upper Cup Stack Height: 11mm - Total upper stack height including bearing cover: 15mm
Lower Cup Stack Height: 3.5mm
Upper Bearing: 41mm OD, 45 x 45 Degree AC sealed bearing
Lower Bearing: 41mm OD, 45 x 45 Degree AC sealed bearing
Fork Steerer Tube Size: 1 1/8"
Material: 6082-T6 aluminium
Finish: Anodised
Headset comes complete with top-cap (starnut included), bearings and crown race - all parts required for fitment.
We use the 'SHIS' standard to label our headsets - For SHIS info please refer to the Park Tools information page - Standardized Headset Identification System | Park Tool





















