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Mopar Challenge R/T

Mopar 360

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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
6350-4000 360 Small Block Mopar FX Series -3cc Flat Top Small Block Mopar Forged Piston Set 4.000 inch bore Pin Dia.: 0.984 6350-4000 360 Small Block Mopar FX Series -3cc Flat Top Small Block Mopar Forged Piston Set 4.000 inch bore Pin Dia.: 0.984
from $749.95
from $749.95
360 Small Block Mopar, FX, Comp Height: 1.667, -3cc Flat Top , PIN: .984", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.580", ROD: 6.123, Approx Comp Ratio: 62cc-11.07, 64cc-10.8, 72cc-9.86 Effective June 15th 2026, These Sm These Block Mopar 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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6350-4030 360 Small Block Mopar FX Series -3cc Flat Top Small Block Mopar Forged Piston Set 4.030 inch bore Pin Dia.: 0.984 6350-4030 360 Small Block Mopar FX Series -3cc Flat Top Small Block Mopar Forged Piston Set 4.030 inch bore Pin Dia.: 0.984
from $749.95
from $749.95
365 Small Block Mopar, FX, Comp Height: 1.667, -3cc Flat Top , PIN: .984", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.580", ROD: 6.123, Approx Comp Ratio: 62cc-11.18, 64cc-10.92, 72cc-9.96 Effective June 15th 2026, These Sm These Block Mopar 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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6350-4040 360 Small Block Mopar FX Series -3cc Flat Top Small Block Mopar Forged Piston Set 4.040 inch bore Pin Dia.: 0.984 6350-4040 360 Small Block Mopar FX Series -3cc Flat Top Small Block Mopar Forged Piston Set 4.040 inch bore Pin Dia.: 0.984
from $749.95
from $749.95
367 Small Block Mopar, FX, Comp Height: 1.667, -3cc Flat Top , PIN: .984", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.580", ROD: 6.123, Approx Comp Ratio: 62cc-11.24, 64cc-10.97, 72cc-10.01 Effective June 15th 2026, These Sm These Block Mopar 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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6350-4060 360 Small Block Mopar FX Series -3cc Flat Top Small Block Mopar Forged Piston Set 4.060 inch bore Pin Dia.: 0.984 6350-4060 360 Small Block Mopar FX Series -3cc Flat Top Small Block Mopar Forged Piston Set 4.060 inch bore Pin Dia.: 0.984
from $749.95
from $749.95
371 Small Block Mopar, FX, Comp Height: 1.667, -3cc Flat Top , PIN: .984", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.580", ROD: 6.123, Approx Comp Ratio: 62cc-11.35, 64cc-11.06, 72cc-10.11 Effective June 15th 2026, These Sm These Block Mopar 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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6353-4000 360 Small Block Mopar FX Series -18cc Dish Top Small Block Mopar Forged Piston Set 4.000 inch bore Pin Dia.: 0.984 6353-4000 360 Small Block Mopar FX Series -18cc Dish Top Small Block Mopar Forged Piston Set 4.000 inch bore Pin Dia.: 0.984
from $749.95
from $749.95
360 Small Block Mopar, FX, Comp Height: 1.667, -18cc Dish Top, PIN: .984", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.580", ROD: 6.123, Approx Comp Ratio: 62cc-9.36, 64cc-9.17, 72cc-8.51 Effective June 15th 2026, These Sm These Block Mopar 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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6353-4030 360 Small Block Mopar FX Series -18cc Dish Top Small Block Mopar Forged Piston Set 4.030 inch bore Pin Dia.: 0.984 6353-4030 360 Small Block Mopar FX Series -18cc Dish Top Small Block Mopar Forged Piston Set 4.030 inch bore Pin Dia.: 0.984
from $749.95
from $749.95
365 Small Block Mopar, FX, Comp Height: 1.667, -18cc Dish Top, PIN: .984", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.580", ROD: 6.123, Approx Comp Ratio: 62cc-9.46, 64cc-9.28, 72cc-8.6 Effective June 15th 2026, These Sm These Block Mopar 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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6353-4040 360 Small Block Mopar FX Series -18cc Dish Top Small Block Mopar Forged Piston Set 4.040 inch bore Pin Dia.: 0.984 6353-4040 360 Small Block Mopar FX Series -18cc Dish Top Small Block Mopar Forged Piston Set 4.040 inch bore Pin Dia.: 0.984
from $749.95
from $749.95
367 Small Block Mopar, FX, Comp Height: 1.667, -18cc Dish Top, PIN: .984", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.580", ROD: 6.123, Approx Comp Ratio: 62cc-9.51, 64cc-9.31, 72cc-8.65 Effective June 15th 2026, These Sm These Block Mopar 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
6353-4060 360 Small Block Mopar FX Series -18cc Dish Top Small Block Mopar Forged Piston Set 4.060 inch bore Pin Dia.: 0.984 6353-4060 360 Small Block Mopar FX Series -18cc Dish Top Small Block Mopar Forged Piston Set 4.060 inch bore Pin Dia.: 0.984
from $749.95
from $749.95
371 Small Block Mopar, FX, Comp Height: 1.667, -18cc Dish Top, PIN: .984", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.580", ROD: 6.123, Approx Comp Ratio: 62cc-9.59, 64cc-9.4, 72cc-8.72 Effective June 15th 2026, These Sm These Block Mopar 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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