Home Honda Foreman 400 Over Bore Piston & Top End Gasket 86.5mm

Honda Foreman 400 Over Bore Piston & Top End Gasket 86.5mm

NOW $382.20
Or 4 interest-free payments of $95.55
In stock at 1 of our locations
🚛 Free NZ shipping
🔒 12 month warranty on all parts
NZ WOF compliant
🔧 Fitting available NZ wide

Description:
Upgrade kit featuring an 86.5mm overbore piston with top end gasket to restore compression and boost performance on Honda Foreman 400. Designed for reliable sealing and durable wear resistance, improving throttle response and engine longevity.

Features:
- Specifically for Honda Foreman 400
- 86.5mm overbore piston with matching top end gasket
- Improves compression, power, and reliability
- Fits standard 400cc configurations, enhances durability

Includes:
1 x Overbore Piston 86.5mm
1 x Top End Gasket Set (86.5mm)

Fits Models:
Honda Foreman 400

Model Years:
(omit if unknown)

Submodels:
TRX500? (confirm if applicable)

Engine Options:
400cc

Over Bore Piston & Top End Gasket 86.5mm for Honda Foreman 400

Honda Foreman 400, overbore piston, 86.5mm, top end gasket, ATV performance, engine kit

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

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