My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Manley 28555HXX BBC 555 Rotating Assembly Kit 4.250 Stroke 4.560 Bore -3cc Flat Top

Manufacturer

Picture for manufacturer Manley

Part Number

28555HXX
8 reviews
Sale Price

$3,344.67

Estimated ship date Tuesday, November 17

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 28555HXX is a complete Big Block Chevy (BBC) 555 cubic inch rotating assembly kit engineered for high-horsepower street and race engine builds. Built around a 4.250" stroke and 4.560" bore, this kit delivers the displacement and durability demanded by serious engine builders.

Key Features:

  • 4340 Forged Steel Crankshaft – Lightweight, high-strength forged steel construction for durability under extreme loads
  • 4340 Forged Steel H-Beam Connecting Rods – Equipped with 7/16" ARP 8740 cap screws rated to 900 hp; optional ARP 2000 cap screws support up to 1,500 hp
  • 2618 Forged Aluminum Platinum Series Pistons – -3cc flat top design with premium chrome moly wrist pins for precise compression tuning
  • Total Seal Piston Rings – High-performance ring package included
  • Clevite Bearings – "H" Series narrowed rod bearings and "P" or "H" Series main bearings included for a complete rotating assembly

Kit Specifications:

  • Engine Family: Big Block Chevy (BBC)
  • Displacement: 555 Cubic Inches
  • Stroke: 4.250"
  • Bore: 4.560"
  • Piston Head Volume: -3cc (Flat Top)
  • Rod Style: H-Beam

This Manley rotating assembly is a comprehensive, system-matched kit designed to simplify the engine building process while ensuring all components work together for maximum reliability and performance. Ideal for street/strip and all-out race applications targeting 900–1,500+ horsepower.

Very simple and clear instructions.

I received the 1st part on friday and the other part on saturday

Great price, in stock!! Can't beat that!

not too many companies had this shroud in stock. dirt everywhere had 10 in stock. Thanks!

Good products and prices are responsible

It was a breeze ordering and getting I was amazed how fast a guy here so thankful for that needed to finish the bottom of my boat.

Fast delivery and good price. Paint cans were a little dented but the product seems to be alright.

Very Easy to manage and order online

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy