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MCB Pro-Series Long Block Engines

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MCB Pro-Series engine rebuilds are done on a per customer basis. This requires you to properly crate and send YOUR complete long block (less accessories and electrical) to us in advance. We will then disassemble, gauge and inspect you cores and advise the customer of condition. We re-condition and rebuild YOUR CRANKCASES, OIL PUMP/DRIVE, AND CYLINDER HEAD. The rest of your parts simply become cores (crank, cylinders etc.) Professionally assembled 800-R /800 E-tec (additional $60.00) / 2007 Summit 800R engine builds. Our Engines have professionally remanufactured crankshafts that are PROPERLY trued and indexed, packed with genuine Isoflex grease, new inner and outer BRP crank seals, re-plated cylinders, MCB Classic Dual Ring Pistons (or Other options available), and Cometic/Winderosa/MCB gaskets. All you will need is to bolt on your carbs, electrical and recoil.

- Professional inspection, gauging and assembly
- Completely re-plated cylinders gauged and honed to ensure proper piston sizing / bore clearance
- Completely re-manufactured Crankshaft (better than OE Bearings, Rods and tolerances)
- New OE Teflon Crank Seals inner and outer
- Premium MCB Dual Ring Pistons (or upgrades)
- Winderosa / Cometic(OEM) gaskets
- New BRP oiling check valves, oil lines, etc.
- All clearances and crush is gauged and all assemblies built to OE (or better) specification
- Quench checked and set per fuel specification and elevation
- All external surfaces coated in proprietary Ceramic HI-temp coating
- Cylinder head installed and torqued to specification (making it a Long Block at no additional charge)

This motor will fit 2007 Summit 800, and all 2008-Current (Etec add $60.00) Ski Doo 800 XP's.

NOTE: WE ALSO OFFER THE SAME BUILDS FOR 600's, 800HO, Polaris 800, and many others just call for more details and pricing! The Same conditions apply as we need your engine in advance.
Please Call for Availability
Availability: As of Feb 2/25/20 we are not accepting new engine builds. Thanks for your patience


  • 8929436
  • 8929436
  • MCB
  • As of Feb 2/25/20 we are not accepting new engine builds. Thanks for your patience
  • New

Shipping Information

  • Item Requires Shipping
  • 85.0 lbs.
  • W24.0000” x H24.0000” x L20.0000”

Customer Reviews

Comment Total Reviews (1)

800R Long Block
  • Currently 5/5 Stars

Reviewed by: Mike10/17/2016 02:32PM

Product ownership: Less than 1 year

Purchased from: MCB Performance

1600 trouble free miles and more power over the stocker! Very professional staff, and got it back in 2 weeks including shipping. Thanks MCB

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