Set of 8 Shim Under Buckets/Lifters/Tappets for the:
GPZ 1100 8 Valve
Z1000
Z900
Z1300 6 Cylinder
KLR KLX 500 / 600 / 650
 
These buckets are used to convert the original heavy bucket and shim to a more modern arrangement where the shim is held by the modified retainer bellow the bucket like it is commonly used in most current high performance motorcycles. These buckets must be used with ABUSO Shim Under Titanium Retainers.
 
These buckets have various advantages:
1 - The shim will not spit out when using aggressive camshafts and increasing the RPM limit because it is held between the retainer and the bucket.
 
2 - There is a great reduction in valvetrain weight that allows more RPM and more aggressive camshafts using the same valve spring pressures, avoiding valve float.
The orginal bucket and adjustment shim (29mm diameter) weight 50g and the ABUSO Shim Under Conversion (with 13mm shims) weights only 32g. This is a 18g improvement per valve - just from the bucket and shims!
The titanium retainers save another 6g over the original steel retainer for a total of 24g per valve!
 
These buckets are compatible with stock base circle cams.

Part Number
12032-1002
120321002
12032-005
12032005