Spare part for KTM Revelator Lisse - all models.Inside the headtube of your frame there is a small piece of aluminum that stops the wheel turning too ...

KTM branded aheadset system top cap.Matt Carbon only1 1/8" supplied with standard star fangled nut, and orange alu boltPart Number:88385

UD Carbon matt1 1/8"1x10mm2x5mm2x2mm

KTM branded aheadset system top cap.Either in Black / Black or Black / Orange1 1/8" supplied with standard star fangled nut.Part Number:88394

KTM branded aheadset system, suitable for a range of KTM bikes- 1 1/8 - 1 1/4" or 1 1/8 - 1.5"- Height: 5mm- Headtube top: 48mmPart number: 883910248 ...

KTM branded aheadset system, suitable for a range of KTM bikes1 1/8 - 1.5"Height: 5mm or 10mmHeadtube top: 48mm or 46mm

Black matt1 1/8"1x10mm2x5mm2x2mm

KTM branded aheadset system top cap.Aluminium  V ScrewBlack Or Orange1 1/8"Part Number:88398

KTM branded aheadset system top cap.1 1/8" supplied with standard star fangled nut.CrMo ScrewPart Number:8839702