Arias Forged Pistons B20B/Z with B18C1 Head 13.9:1 84.5mm 0.5mm 89mm Stroke 137mm Rod



This will be a special order for you.

This will be a special order for you.

SKU: A3330621 Categories: , ,


Arias Pistons makes several part numbers for this application with a variety of different bore sizes, and compression ratios options. Please use the drop-down menus above to select the correct application for your build.

ARIAS PISTONS has been the leader in compact piston technology since our beginnings. While piston suppliers at that time focused mostly on larger-bore domestic V-8’s, ARIAS had the foresight to cater to the smaller-bore, higher-revving, hotter-running imports & domestic compacts.

Today, ARIAS maintains an unmatched advantage in the import and domestic compact market. Over three decades of research and development have led to the ARIAS Sport Compact shelf line.

  • Hi-tensile forged, not cast, billet material (4032 or 2618).
  • CNC machined working surfaces.
  • Optimized crowns for efficient combustion.
  • Diamond-turned ellipsoidal skirt profile.
  • All motor/Nitrous pistons feature lightweight, high strength construction.
  • Turbo/Nitrous pistons feature durable, heavy-duty design.


Item Weight 312 g
Shipping Weight (Dimensional) 5.0000
Part Type Pistons
Make Honda / Acura
Vehicle Model Del Sol / Civic Si / Integra RS LS GS-R
Vehicle Group CR-V 97-01 RD1-RD3
Engine B20B, B20Z
Compression Ratio 13.9:1
Bore Diameter 84.5mm
Pin Size 0.827″ / 21mm
Included Ring Set CPN-3327
Included Pin 827-2250-16CP1C
Head cc 41.6 cc
Face Type Dome
Dome cc 7.3 cc
Compression Height 1.180″ / 30mm
Manufacturer Arias Pistons
Stroke 89mm
Skirt Type Full Round
Rod Length 5.394″ / 137mm
Piston Material 2618
Compression Ratio Gasket Thickness .028″
Compression Ratio Range 13.0:1+
Big End Width 0.020″ / 0.5mm
Bore Oversize 0.020″ / 0.5mm
Engine Head B18C1
Rod Length Oversize Standard Length
Carb Legal Unspecified
Stroke Oversize Standard
Wrist Pin Dimensions .827″ x 2.250″ x .160″
Pin Material 5100 Chrome Moly Steel
Product Flags N/A

Additional information

Shipping Weight 5 lbs
Part Type



Arias Pistons

Car Make



Arias Pistons

ARIAS PISTONS was brought to life in 1969 as a manufacturer and supplier of high performance, high quality pistons and related hardware. Arias is a leader in Sport Compact and Domestic high performance pistons.


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