Sinister Diesel | Chevy and GMC Duramax Diesel Forum

Sticky Sinister Big Spring Season Sale!!!

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by SinisterDiesel

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by SinisterDiesel

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by SinisterDiesel

Sign Up For Sinister Diesel's Free Catalog

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Boost Your Diesel Performance with an Exhaust System Upgrade!

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by SinisterDiesel

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Sinister Diesel is #1 in Performance Parts and Kits!

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Boost Your Diesel Performance with an Exhaust System Upgrade!

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by SinisterDiesel

Free Next Day Shipping on Most Purchases from Sinister Diesel!

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by SinisterDiesel

Sinister Diesel Guarantees Your Satisfaction With Our Products & Service!

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Sinister Diesel 10% Off Site Wide

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Sinister now has some new EGR Deletes and Intakes!

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Water Meth Injection by Snow Performance on sale 6/29 only!

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by SinisterDiesel

Welcome Sinister Diesel!

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by Administrator