150HPThe kids at Speedwerx have been very busy this past winter and early spring, squeezing additional power from the big bore Arctic Cat 1000 in both ATV and UTV form. Their latest kits delivers 105 ponies… check it out with the official release from Speedwerx below:

We have the kit to UNLOCK 105 HORSEPOWER out of your stock machine. We will greatly improve the performance of your machine with our core upgrades. This will unlock the full potential of your machine. All kits are priced at $3500.00 USD, this is over $200 off of the list price! If you are looking for the best deal possible… this is it!


  • Speedwerx 1100cc Big Bore Kit
  • Speedwerx STAGE II Head Porting & Valve Job
  • Speedwerx ‘Go-Fast’ Camshafts
  • Power Commander V Fuel Controller
  • Speedwerx Slip-On Exhaust Kit: Standard or L2 Series
  • Speedwerx Custom 11:1 or 12:1 High Compression Pistons


  • Speedwerx HYPERSHIFT Clutch Kit – add $174.00 – $363.00 USD
  • Speedwerx Wet Clutch Delete Kit – add $1800.00 USD (NOTE: The Wildcat X Models do not need this.)
  • Speedwerx Hi-Rev ECU Re-Programming – add $379.95 USD (Available for Wildcat & Wildcat X Only!)
  • Speedwerx Hi-Rev ECU (Outright Purchase) – add $759.90 USD (Available for Wildcat & Wildcat X Only!)
  • Speedwerx H5 Alloy™ Valve Springs – add $191.60 USD
  • Upgrade to STAGE III Head Port/Valve Job (Includes Upgraded Exhaust Valves) – Add $1608.00 USD

IMPORTANT NOTE: All prices listed are dependent on you sending in your stock cylinders, heads, camshafts and valves. If you do not want to send these parts in we will need to charge you for the cores. Please call for current core pricing.


Wildcat Kit: http://www.speedwerxstore.com/index.php?l=product_detail&p=2962

Wildcat X Kit: http://www.speedwerxstore.com/index.php?l=product_detail&p=2963

1000 Prowler Kit: http://www.speedwerxstore.com/index.php?l=product_detail&p=2964

1000 Mud Pro Kit: http://www.speedwerxstore.com/index.php?l=product_detail&p=2967

1000 Thundercat/XT Kit: http://www.speedwerxstore.com/index.php?l=product_detail&p=2968