KAD In-house produced Road100 LDF105800 stage 3 cylinder head. A must for any road performance A-Series. CNC machined for unleaded exhaust valve seats and combination chamber profile. Hand ported and polished to suit application and engine specification (we will contact you to confirm). Parts list includes - Unleaded valve seats Bronze valve guides 35.7x31mm 9/32 stem EN214N Stainless and heat treated valves Hardened spring platform washers KAD 200lb double valve springs All cylinder heads are acid dipped, all surfaces are re-machined, thread checked and repaired if necessary, 11 studs drilled, springs platforms levelled and 3 angle valve seats. A lot of time goes into our cylinder heads to ensure the best product possible. Chamber volumes up to 28cc. When teamed up with KAD100 Camshaft, 1380cc and single HIF44 you can see over 100hp and 100ft/lb of torque! We are also happy to produce any custom cylinder heads. Please contact us if you have any other requirements. Please note, these heads are all machined and hand ported to order, this is not an off the shelf item and there could be extended delivery times depending on our workload.