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International Order Notice:
First time international MMXLTX.com customers purchasing product in excess of $500.00 are required to pay by money order or bank transfer. Please call or email for more information before placing your order.

MMXLTX offers in-house installation as well as other GM related services!

MMXLTX.com Accepts:
Modern Muscle Performance Proudly Accepts Paypal

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Tuners

MPVI2 Tuning Credit Option by HP Tuners

Purchase tuning credits to use your MPVI2 to tune your vehicle. Please use the quantity field to add the amount of credits you would...read more

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$49.99

MPVI2+ Engine Tuner by HP Tuners

**Note: 2017+ GM 8-Speed and 10-Speed Tranmission Control Modules require unlock via HP tuners GM TCM Unlock service before...read more

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$399.99

MPVI2+ Engine Tuner with PRO Feature by HP Tuners

**Note: 2017+ GM 8-Speed and 10-Speed Tranmission Control Modules require unlock via HP tuners GM TCM Unlock service before...read more

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$649.98

Modern Muscle Xtreme Internation Order Notice

MMXLTX Performance offers in-house installation as well as other GM related services!

MMXLTX.com Accepts:
Modern Muscle Performance Proudly Accepts Paypal