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MCB PLATINUM Stage-4 "LONG ROD" Polaris 1000 General complete engine rebuild kit. 2016 - 2020

MCB's NEW PLATINUM "LONG-ROD" Series Stage-4 Rebuild kit - Polaris 1000 GENERAL 2016 and up. This MCB exclusive kit is proven to address the common wear items and DRAMATICALLY increase durability with MUCH Stronger, Precision components. Our NEW PLATINUM engine kits are absolutely the finest, most comprehensive Engine build kits you can buy. EXCLUSIVE - All our GENERAL rebuild kits use ONLY Custom FORGED pistons, 5140 forged crankshafts, H-BEAM connecting rods, OEM Main and Rod bearings, ETC!

Our NEW 1000 Long-Rod kit uses our EXCLUSIVE H-Beam connecting rods that are not only rated to 600 HP!, but reduce bearing deflection, reduce side loading, reduce piston weight AND increase R/S ratio! We include a custom CNC'd spacer and Cometic gaskets in order to further raise the cylinder which aids cooling and reduces windage losses.

Our PLATINUM kits also now include proper OEM bearing matching. You MUST provide us with your crankcase codes (see pic) and we will then match the bearings to your new MCB crankshaft and supply you with you specific diagram showing your bearing codes and locations. We ALSO supply you with new Plasti-gauge for spot checking your crankcases to ensure these critical bearing clearances are met!

ONLY MCB offers a CHOICE of compression ratio's to suit your needs. As noted below you MUST measure your cylinder height and note that below and then you can choose your compression!

This MCB PLATINUM Stage-4 rebuild kit includes ALL of the following:

Genuine OEM Polaris completely re-plated cylinder block
MCB/HR NEW Forged heavy Duty 5140 crankshaft, balanced
MCB EXCLUSIVE Custom FORGED pistons with HD 9310 pins
MCB EXCLUSIVE Pro-Series Ring set this alone solves many issues with oil consumption (includes Stainless Top and Napier Second rings)
MCB EXCLUSIVE H-BEAM connecting rods with ARP rod bolts good to 600HP!
MCB EXCLUSIVE CNC cylinder spacer / long dowels and Cometic gaskets
MATCHED OEM Polaris Main bearing set (must provide your case codes)
MATCHED OEM Polaris Rod bearing set
Complete Counter-balancer bearing kit
New OE Head Bolt kit (correct TTY bolts)
MCB/AT Complete gasket set with correct valve seals/spring seats
New OE Polaris Oil Pump complete with NEW drive gear and seals
New OE Polaris COMPLETE water pump (NOT just a rebuild kit)
New OE Polaris Oil Pump chain
New Genuine Borg Warner Timing chain (the BEST)
New OE Polaris Upgraded cam gear bridge (helps eliminate chain jumping)
New OE Polaris Crank Seal (the only version that DOESNT leak)
Full section Plasti-Gauge
Correct OE-specified crankcase sealant
3 Quarts Driven BR-Series engine oil (The absolute best break-in oil!)
1 Bottle high shear engine assembly lube
Engine Service manual with OEM specifications and guide.

IMPORTANT NOTE !!!! You MUST specify your exact year/machine AND note your original cylinder casting number (for instance 5632934 / 5633627) to ensure getting the correct parts. These are Genuine OEM Polaris cylinders and difficult to obtain so we require you to ship us YOUR good core PRIOR to us shipping the order. It is also very helpful if you measure the height of your cylinder and notify us of this when you give us the casting #. This will reserve a cylinder of the correct height and casting while we wait for you to send in your core.

Pricing: $2,699.95

Customize Your Item

- Select casting # and height -
 * required
- 2.177 tall cylinder COMPRESSION -
 * required
- 2.144 tall cylinder COMPRESSION -
 * required


  • 23430439
  • 23430439
  • MCB
  • New


Shipping Information

  • Item Requires Shipping
  • 35.0 lbs.
  • W24.0000” x H16.0000” x L10.0000”

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