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CAN-AM MAVERICK X3 (ROTAX 900 ACE) STROKER KITS
The BC stroker kit for the Can-Am X3 engine platform incorporates a 73.5mm (+3.8mm) stroke in the OEM crank pin configuration. This 73.5mm stroke along with the stock 74mm bore turns the ROTAX 900 into, essentially a square engine which delivers the perfect balance of speed and pulling capability. The stroke increase also builds full boost approximately 2000 rpm sooner than the stock (69.7mm) stroke. Depending on bore size that you decide, the BC kit will take you up to a 948.35cc with stock 74mm bore, 974.17cc with 75mm or 999.60cc with 76mm Darton sleeved case configuration As usual, each BC kit features your choice of custom BME, CP or JE aluminum forged pistons, 9310 alloy wrist pins in .190" minimum wall thickness, locks and complete ring pack. Available in any desired bore and compression ratio. Stock stroke 69.7mm billet crankshafts also available as OEM replacement with added counterweight mass for proper balancing characteristics.

Note: If using the BC connecting rods with the low profile, 625+ ARP custom rod bolts, the aftermarket billet girdle is not required.

  • BC 4340 billet steel crankshaft (73.5mm stroke) rated up to 500whp.
  • BC 4340 billet crank (73.5mm stroke) rated up to 400whp for the Duner w/stock clutch.
  • BC EN40 billet steel crank (73.5mm stroke) rated to 500whp without aggressive clutching.
  • BC 4340 billet crank (69.7mm stock stroke) rated up to 400whp, requires no heavy metal balance.
  • BC 4340 MOAR I-Beam design rods with ARP CustomAge 625+ fasteners (18mm pin), rated to 60psi.
  • BC 4340 MOAR I-Beam design rods with ARP CustomAge 625+ fasteners (20mm pin), excess of 70psi.
  • BME or CP aluminum forged pistons in 74, 75 and 76mm bore sizes and 18mm or 20mm wrist pin.
  • Pistons are fully CNC machined from 2618 aluminum forgings with precision machined ring grooves.
  • 9310 or 8620 alloy wrist pins with .190" minimum wall thickness, with gun drilled and honed I.D.'s
  • High tension oil rings specifically designed for high boost to prevent detonation from poor oil control.
  • Full system, precision balanced to specific bobweights and ready to install. (50% deposit required).
Stock Specification ROTAX 900 Ace 74mm Bore x 69.7 Stroke - 7.180" Case Height
Stroker Kit # Crankshaft # Rod # Piston # Description Buy Now Status
BC0938 BC5931 BC6932 BC7931 w/18mm Pin BC STROKER KIT - BC 4340 Crank (73.5mm), BC Pro625+ Rods w/18mm Pins, Custom Pistons - 38psi Max Boost In-Stock
BC0937 BC5931 BC6933 BC7931 w/18mm Pin BC STROKER KIT - BC 4340 Crank (73.5mm), MOAR Rods w/18mm Pin, CP, JE or BME Custom Pistons - 60psi Max Boost In-Stock
BC0935 BC5930 BC6934 BC7931 w/20mm Pin BC NON STROKER KIT - BC 4340 Crank (69.7mm), BC MOAR rods (+2mm C-to-C), 20mm Pin Pistons - 60psi Max Boost In-Stock
BC0939 BC5931 BC6933 BC7931 w/20mm Pin BC STROKER KIT - BC 4340 Crank (73.5mm), BC MOAR Rods w/20mm Pin, CP, JE or BME Custom Pistons - 60psi Max Boost In-Stock
BC0936 BC5932 (EN40) BC6935 BC7931 w/20mm pin BC STROKER KIT - BC EN40B Crank (73.5mm), BC MOAR Rods w/20mm Pin, BME or CP Custom Pistons - Excess of 70psi Boost In-Stock
NOTE: Additional charge for mandatory precision balancing prior to operation. Failure to do so will cause catastrophic damage.
619.749.9018 ph
619.749.9128 fx
Some products listed are not legal for sale or use on emission controlled motor vehicles, RPM ranges vary on application.Warranty Information Copyright © Brian Crower Inc. All rights reserved..
WARNING: This product can expose you to chemicals, including Chromium (hexavalent compounds), lead and lead compounds, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.p65warnings.ca.gov