Replacement part#: VM28/486. Please check the size indicated on the pilot jet kit images to avoid any errors. Select the correct variation with the size that you require. Fit for Mikuni HS40 Flat Slide w/Accelerator Pump, HSR42 HSR45 HSR48 New Style; HSR45 Old Style; RS34 RS36 RS38 RS40 Flat Slide Rack. Fit for Mikuni TM33-8012 TM36-68 TM40-6 Flat Slide with Accelerator Pump. Fit for Kawasaki Z1 A/B-900 KZ900 A/B 1976-1977 KZ1000 1977-1980; For Suzuki GS750 1978-1979 GS1100 1978-1979; For Yamaha TT-R125. Slow jet size: 10; 12.5; 15; 17.5; 20; 22.5; 25; 27.5; 30; 32.5; 35; 37.5; 40; 42.5. Fit for Mikuni HS40 Flat Slide w/Accelerator Pump, HSR42 HSR45 HSR48 New Style; HSR45 Old Style; RS34 RS36 RS38 RS40 Flat Slide Rack.