Wiseco 573M06800 68mm Piston - Banshee 4mm Long Rod Stroker

The #1 Piston for Banshee 4mm Long-Rod Stroker Builds

The Wiseco Pro-Lite 573M06800 is the exact 68mm piston thousands of builders trust for +4mm long-rod stroker cranks (115mm rod). Originally designed as a Blaster 200 piston, it's become the go-to choice for 392cc Banshee stroker motors because the dome shape and compression height deliver perfect piston-to-head clearance—no case machining, no head machining, no base spacers needed.

If you're building a Banshee with a +4mm stroker crank and 68mm cylinders, this is your piston.

Why Builders Choose the Wiseco 573M06800

✓ Perfect clearance out of the box – works with OEM or aftermarket heads, no machining required
✓ 68mm bore = 392cc displacement with +4mm stroke (most common long-rod stroker size)
✓ Pro-Lite forged 4032 aluminum alloy – lighter than stock, stronger than cast
✓ ArmorGlide® skirt coating – reduces friction, speeds break-in, extends piston life
✓ Domed top – optimized compression for pump gas or race fuel
✓ Made in the USA – Wiseco factory race quality since 1941

What's Included in the Kit

- (1) Wiseco Pro-Lite 68mm piston
- Piston rings (pre-gapped)
- Wrist pin
- Circlips

Confirmed Fitment

- Yamaha Banshee 350 (1987–2006) with +4mm long-rod stroker crank
- Compatible with Hot Rods, ProX, Vito's, and other aftermarket +4mm stroker cranks
- Requires 68mm cylinders (sleeved stock cylinders, Cool Head, Cheetah, etc.)
- Works with OEM head or aftermarket domes (Noss, Cool Head, Pro Design, etc.)

Technical Specifications

Part Number: 573M06800
Bore Size: 68.00mm (+1.60mm over stock 66.4mm)
Displacement: 392cc (with +4mm stroke / 58mm stroke total)
Material: Forged 4032 Pro-Lite aluminum alloy
Skirt Coating: ArmorGlide®
Compression: Domed (medium dome)
Ring Type: Pre-gapped for 68mm bore
Weight: Lighter than OEM cast piston
Compression Height: 1.181" (30.00mm) – correct for 115mm rod length

What You'll Also Need (Not Included)

⚠️ This kit does NOT include:
- Base gaskets (order separately – copper or Cometic recommended)
- Head gaskets (required for proper sealing)
- Cylinder boring/honing service (if using stock cylinders)
- Top-end gasket kit
- Wrist pin bearings (Hot Rods or OEM)
- Engine assembly lube

Installation Notes

Difficulty Level: Intermediate to Advanced
Tools Required: Torque wrench, piston ring compressor, dial bore gauge, feeler gauges
Professional Installation Recommended: If you're not experienced with stroker builds, we recommend having a qualified engine builder install this kit.

Break-In Procedure:
1. Use high-quality 2-stroke oil at 32:1 ratio for first tank
2. Vary RPM for first 2-3 tanks – no sustained wide-open throttle
3. Check ring seal and compression after break-in
4. Re-torque head after first heat cycle

Why This Piston Works for Long-Rod Strokers

Most Banshee stroker kits use a +4mm crank with a standard-length rod (105mm), which requires machining the cases and head for piston clearance. But if you use a +4mm long-rod crank (115mm rod), the longer rod changes the piston's position in the stroke—and this 68mm Wiseco piston has the exact compression height to clear the head without any machining.

That's why this Blaster piston became legendary in the Banshee stroker community—it just works.

Warranty & Returns

- Wiseco Factory Warranty: 1 year against defects in materials and workmanship
- Return Policy: Pistons must be uninstalled and in original packaging. No returns on used pistons.
- Fitment Guarantee: If this piston doesn't fit your confirmed +4mm long-rod stroker setup, we'll help you get the right part.

Questions? We're Here to Help

Not sure if this piston is right for your build? Contact us:
📞 541-668-7503
📧 Support@dunegoonshop.info
💬 Live chat available M-F 9am-6pm EST

Same-day shipping on orders placed before 3pm EST.