Name: Banshee 392cc Athena 68mm Big Bore Engine Rebuild Kit (Stock Crank) (1987-2012)
Brand: Dune Goons @ WPS
SKU: 284383227009
Price: 2689.00 USD
Availability: InStock

Banshee 392cc Athena 68mm Big Bore Engine Rebuild Kit (Stock Crank) - Dune Goons

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Call us: 541-668-7503

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$2,689.00

Shipping calculated at checkout.

Add Modquad Cool Head and 22cc pump gas domes?

Yes I'll do the Cool head upgrade please

No the Athena Head will work great with this setup

Add V-Force 4 Reed Valves?

Yes I need to get Valves too please

No I already have a good upgraded valve to go with this setup.

Unleash legendary Banshee power with this complete top and bottom end rebuild kit, combining the precision of Athena's 68 mm Big Bore Cylinder Kit with the proven durability of Hot Rods' Bottom End Kit.This all-in-one package delivers everything needed for a full performance rebuild - from crankshaft to cylinders - giving your twin-cylinder 350 the torque, throttle response, and reliability it deserves.

✓ Fits:

Yamaha Banshee YFZ350 (1987-2012)
Direct bolt-on kit for all years and editions
Works with stock or aftermarket carbs, reeds, and exhausts
No case boring required

✓ Features:

Complete top & bottom rebuild - everything from crank to head
Genuine Athena & Hot Rods performance components
68 mm big bore delivers stronger mid-range and peak power
High-flow power valves and precision-fit pistons
OEM-quality gaskets for long-term sealing integrity
Perfect base for mild trail or full dune-race builds

✓ What's Included:

Athena 68 mm Big Bore Top End Kit (P400485100024)
Aluminum cylinders with nickel-carbide plating
Billet aluminum head with removable bronze domes
(2) 68 mm cast-lite flat-top piston kits (rings, pins, clips)
High-performance hard-anodized power valves (non-OEM design)
Top-end gasket set with all seals and hardware
Hot Rods Bottom End Kit (CBK0039)
Complete assembled crankshaft
Main bearings and crank seals
Full bottom-end gasket set for complete rebuild coverage
Ready to install - no case machining required

Ships fast from DuneGoonShop!

📦 Shipping Information

In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.

Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.

Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.

Questions? Contact us, we respond within 24 hours.

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