Gas Cap and Head sets will be etched together for a limited time. Buy a Phathead cylinder head kit and gas cap, select custom etch and we will etch both the cap and head. Call (734) 648-0103, email, message or chat. Free shipping orders $60+. Everything on the site is in stock.

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PhatheadRacing

Yamaha YZ85 combustion chambers

Chamber selection Y01 - 6.4cc Stock Y02 - 6.0cc (95+ octane) Y03 - 5.6cc (100+ octane) Y04 - 5.2cc (105+ octane) 52.5mm big bore 100+ octane

Product variants

$80.00 USD

$80.00 USD

Sale Sold out

Shipping calculated at checkout.

Quantity

Chamber selection:

Y01 - 6.4cc Stock
Y02 - 6.0cc (95+ octane)
Y03 - 5.6cc (100+ octane)
Y04 - 5.2cc (105+ octane)