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AMX Javlin

AMC 390

STEP 1: Choose Cyl Bore Size Show all STEP 1: Choose Cyl Bore Size
STEP 2: Piston Series Show all STEP 2: Piston Series
STEP 3: Connecting Rod Length Show all STEP 3: Connecting Rod Length
STEP 4: Piston Pin Diameter Show all STEP 4: Piston Pin Diameter
STEP 6: Top - Comp. Ratio Show all STEP 6: Top - Comp. Ratio
Compression Height Show all Compression Height
Crankshaft Stroke Show all Crankshaft Stroke
6610-4165 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.165 inch bore Pin Dia.: 1 6610-4165 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.165 inch bore Pin Dia.: 1
from $749.95
from $749.95
390 AMC V8, FX, Comp Height: 1.55, -3cc Flat Top , PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-13.9, 54cc-13.13, 58cc-12.42 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
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6610-4185 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1 6610-4185 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1
from $749.95
from $749.95
393 AMC V8, FX, Comp Height: 1.55, -3cc Flat Top , PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-14, 54cc-13.19, 58cc-12.5 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
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6610-4195 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.195 inch bore Pin Dia.: 1 6610-4195 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.195 inch bore Pin Dia.: 1
from $749.95
from $749.95
395 AMC V8, FX, Comp Height: 1.55, -3cc Flat Top , PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-14.03, 54cc-13.25, 58cc-12.54 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
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6615-4165 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.165 inch bore Pin Dia.: 1 6615-4165 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.165 inch bore Pin Dia.: 1
from $749.95
from $749.95
390 AMC V8, FX, Comp Height: 1.55, -25cc Dish Top, PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-10.52, 54cc-10.08, 58cc-9.69 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Choose Options
6615-4185 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1 6615-4185 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1
from $749.95
from $749.95
393 AMC V8, FX, Comp Height: 1.55, -25cc Dish Top, PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-10.58, 54cc-10.15, 58cc-9.76 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Choose Options
6615-4195 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.195 inch bore Pin Dia.: 1 6615-4195 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.195 inch bore Pin Dia.: 1
from $749.95
from $749.95
395 AMC V8, FX, Comp Height: 1.55, -25cc Dish Top, PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-10.62, 54cc-10.19, 58cc-9.79 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Choose Options
6630-4165 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.165 inch bore Pin Dia.: 1 6630-4165 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.165 inch bore Pin Dia.: 1
from $749.95
from $749.95
390 AMC V8, FX, Comp Height: 1.59, -3cc Flat Top , PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-13.9, 54cc-13.13, 58cc-12.42 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Choose Options
6630-4185 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1 6630-4185 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1
from $749.95
from $749.95
393 AMC V8, FX, Comp Height: 1.59, -3cc Flat Top , PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-14, 54cc-13.19, 58cc-12.5 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Choose Options
6630-4195 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.195 inch bore Pin Dia.: 1 6630-4195 390 AMC V8 FX Series -3cc Flat Top AMC Forged Piston Set 4.195 inch bore Pin Dia.: 1
from $749.95
from $749.95
395 AMC V8, FX, Comp Height: 1.59, -3cc Flat Top , PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-14.03, 54cc-13.25, 58cc-12.54 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Choose Options
6635-4165 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.165 inch bore Pin Dia.: 1 6635-4165 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.165 inch bore Pin Dia.: 1
from $749.95
from $749.95
390 AMC V8, FX, Comp Height: 1.59, -25cc Dish Top, PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-10.52, 54cc-10.08, 58cc-9.69 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Choose Options
6635-4185 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1 6635-4185 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1
from $749.95
from $749.95
393 AMC V8, FX, Comp Height: 1.59, -25cc Dish Top, PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-10.58, 54cc-10.15, 58cc-9.76 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Choose Options
6635-4195 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.195 inch bore Pin Dia.: 1 6635-4195 390 AMC V8 FX Series -25cc Dish Top AMC Forged Piston Set 4.195 inch bore Pin Dia.: 1
from $749.95
from $749.95
395 AMC V8, FX, Comp Height: 1.59, -25cc Dish Top, PIN: ", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.574", ROD: 5.858, Approx Comp Ratio: 50cc-10.62, 54cc-10.19, 58cc-9.79 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Choose Options