Engines and Components› Pistons and Piston Rings

Wiseco

Wiseco MitsUBISHI Turbo -18cc 1.390 X 92MM Piston Shelf Stock

$217.99

SKU: W00C 6555M92

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

It is constructed from 2618 Aerospace alloy for a superior strength-to-weight ratio and features an ArmorGlide® skirt coating for reduced friction and quieter operation. The piston has a bore size of 92.00 mm, a compression height of 35.30 mm, and a dome volume of -17cc, resulting in a compression ratio of 7.25-7.8:1.

It is compatible with the recommended ring set 9200XX.
Show original supplier description

Part #: 6555M92

Professional Series forged racing pistons from Wiseco are no-expense-spared pistons designed for the serious racers and builders. Packed full of custom-level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco s Professional Series.

Features:

  • Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength
  • ArmorGlide Skirt Coating: seizure resistant, friction reduction, and quieter operation
  • Fully machined crown features
  • Precision ring grooves, anti-detonation groove, and additional ring seal improving features
  • Forced pin oiling
  • Designed and built to withstand heavy to severe duty performance applications

Wiseco Mitsubishi 4G54B Piston, 92.00 mm Bore, 35.31 mm Compression Height, 0.866 in. Pin Diameter, Sport Compact, Set of 1.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Vehicle Symptoms
  • Engine knocking under load
  • Excessive oil consumption (blow-by)
  • Loss of compression in one cylinder
  • Blue smoke from exhaust on startup
  • Rough idle and misfire
Relevant Conversations
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  • best forged pistons for high boost 4G54
  • 92mm piston ring gap recommendations
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  • piston slap after rebuild normal?
  • compression ratio with Wiseco 6555M92
  • 4G54 forged piston set for turbo
  • Wiseco piston coating benefits
  • co-purchase piston rings and bearings for rebuild

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandWiseco
Part NumberW00C 6555M92

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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