Our only drop on kit thanks to the Arctic Cat design!
The Catalyst chassis is so easy to ride and gets up on the snow but felt the engine could use more excitement! This will be worth voiding your warranty!! Inspired by the legendary mid-2000s big bores, the 1030cc Stroker Kit will bring back that aggressive torque curve, delivering a crisp hit from a standstill and serious pull through the entire powerband. We will be receiving production cylinders and parts August of 2025 and start dyno testing. Aiming to have it on the snow November 1, we will take preorders with no deposit and release the kits when we have enough testing to feel comfortable we have nailed it!
Key Features
93mm forged pistons
Utilizes stock crank with option to upgrade to Indy Specialties Billet replacement crank
Drop on top end – utilizes stock crankcase and crankshaft, no machining
Compatible with both boosted and naturally aspirated setups
Can run stock injection and air induction systems
Option for:
Injector relocate blocks with stock throttle body
Upgrade to SSI 55mm throttle bodies
Pump gas compatible — not our favorite, but it’s doable
Testing stock pipe
Testing twin pipes
Testing Jaws Single pipe kit
What’s Included in the Kit
Cast Big bore cylinder 93mm bore
Billet head c/w domes & new bolts & billet water fittings
2X Forged Piston kits
Top End Gasket Kit
Stainless coated base gasket
New Primary Power Valves and cover to match cylinder
Reach out to us to get answers to all your product questions. You can also find common answers on our Technical Info Page.
Contact Info
Phone: 587-802-4031
Email: Dean@upshift403.com
How fast is shipping?
This the depends on the product and time of season. Please inquire for more info.
What's the returns policy?
Generally as long as the product is unused, untampered with, and undamaged we will accept returns. Please reach out to us with photos and information before returning.
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