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Wiseco Big Bore Replacement Piston
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Wiseco Big Bore Replacement Piston

Our price: $181.80$198.95

MSRP: $202.00 - $220.00 - You save up to $21.05 (10% off)

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  • "Customer service is priority #1 at Rocky Mountain ATV/MC. We value our customers and strive to be the best shopping experience- when you buy from us, you are buying lifetime service."

    -Dan Thomas, CEO and Founder

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    We take pride in offering no hassle returns. In the event of a return, please call, email or chat with us to receive a solution to the problem. For apparel that doesn't fit quite right, Click here to see our Fit Guaranteed Program.

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Additional Videos

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How to - rebuild the top end on a motorcycle or atv (Part 1)

RM YouTube Channel


    Once you’ve felt the power of a 440 big bore kit, you’ll appreciate the work that goes into Wiseco’s Big Bore Replacement Piston.

    Wiseco makes their big bore pistons to exacting standards needed to withstand the incredible forces and power big bored engines put out. That’s why Wiseco uses forged pistons made from incredibly durable aluminum alloy for both strength and longevity in the face of massive torque and horsepower. The skirt of Wiseco pistons comes in a unique profile to help eliminate piston rock and also has an ArmorGlide coating that increases lubrication. When paired together, these two features help the big bore piston run as efficiently as if it was stock.

    Top off all of Wiseco’s innovations off with the fact that these Big Bore Replacement Pistons are made in America, and you have a piston that will keep your 440 big bore running like a top.

  • Forged aluminum alloy
  • Proprietary skirt design
  • Made in the USA
  • ArmorGlide™ skirt coating

Wiseco Big Bore Replacement Piston Reviews

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0 of 0 people found this review helpful.

Great power

Comments On Jan 13, 2015:Did the big bore kit and piston great power!

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0 of 0 people found this review helpful.

High Quailty

Comments On Aug 01, 2013:Light weight and made my bike run really well. Easy installation came with instructions and a sticker pack. That is what you should expect for the best. Wiseco and RM

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