Polaris Big Boss 250 73mm .040 Over Bore Piston Kit (1989–1993)
Description:
040 over bore piston kit to boost displacement, fit 1989–1993 Big Boss 250.
Features:
- Designed for Polaris Big Boss 250 (1989-1993)
- 73mm bore, 040 over
- Includes rings, pin, and clips
Includes:
- 1 x piston kit (73mm)
Fits Models:
Polaris Big Boss 250
Model Years:
1989 - 1993
Submodels:
All 250 Big Boss submodels
Engine Options:
250cc two-stroke
040 Over Bore Piston Kit for Polaris Big Boss 250 73mm (1989–1993)
040 over bore, piston kit, Polaris, Big Boss 250, 1989 1993, performance
Shipping Information
Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.
The Kren Bits journey:
- Order received — Day 0
- With fulfilment — Day 1–2
- Heading to courier — Day 2–4
- Shipped — Day 3–7
- Almost there — Day 5–10
- Delivered — Day 5–14
Where your part ships from:
Your order ships from the closest warehouse with available stock across our six-warehouse network — NZ, AU, TH, UK, US, and CN.
We email you at every real milestone — order received, with fulfilment, heading to courier, shipped, almost there, delivered. No chasing, no vague waits.
For more details, visit our Track Your Order page.
Product Enquiry
Got a question about this product? Need to check fitment for your vehicle? Fill in the form below and we'll get back to you within 24 hours.
Pay in 4 interest-free payments