T-Man Performance will provide you with the most informative, innovative information possible to make your build perform the way it is supposed to perform. Browse through our Tech Tips video blogs or FAQs to get answers to the questions we get most often.

Re-Torquing Sequence on Crank Case Studs

M8 Complete Bottom End Service – Pt 4

Deck Height and Piston Rock

Proper Packaging

M8 Complete Bottom End Service – Pt 3

M8 Complete Bottom End Service – Pt 2

M8 Complete Bottom End Service – Pt 1

R&D Motorsports Transmission Upgrade

T-Man Custom M8 Head Breathers

T-Man Signature Thumper Head Update

T-Man 124″ Build Dyno Test

Tech Tip: Milwaukee-Eight® Piston Jet Oilers

T-Man External Head Oil Drains

Our Newest Team Member

New T-Man External Breather Kits

T-Man Oil Tank Vent Line Kit

High Performance Ignition PE 3 By GMS


Milwaukee-Eight™(M8) Big Bore Cylinder Kits

Milwaukee-Eight™(M8) Loose Valve Seats – Part 2

Milwaukee-Eight™(M8) Loose Valve Seats

Introducing Our New Performance Clutch Parts

Our New Custom-Made Pistons

Milwaukee-Eight™(M8) Head Progress

Running the final CNC program on our M-8 heads

T-Man Performance introducing new performance clutch parts

Introducing T-Man’s No Loss Air Cleaner

Creating a Manifold

New T-Man Billet Manifold

T-Man Performance Billet Manifold Prototype

Hand Finishing of Manifold for New B2 & Billet Heads

Update: B2 Manifold for New Grudge Motors

T-Man ProCharged Bagger Harley – Checking the Crank Runout

T-Man ProCharged Bagger Harley – Final Update

T-Man Procharged Bagger Harley – Update 3 (Dyno)

T-Man Procharged Bagger Harley – Update 2

T-Man Procharged Bagger Harley – Update

T-Man Tech Tip: HD Case Alignment

T-Man ECTA Ohio Mile New Record – Start

T-Man ECTA Ohio Mile New Record – Finish

T-Man – Sunday At The Shop

T-Man  – Our New Fully Welded Ports

T-Man – Progress On New Billet Manifold

T-Man 124″ CVO Thumper Dyno

T-Man CVO 110″ Dyno

T-Man Understanding Your Pinion & Sprocket Shaft Runout

T-Man 1250cc Sportster Street Elite Dyno

T-Man Performance 124″ Dyno

T-Man Performance on 1200cc Sportster at ECTA Ohio Mile

T-Man Valve Job Demonstration

T-Man Billet Head Exhaust Flow Test

T-Man Billett Head Intake Flow Test

Join Us


SIGN UP HERE to join our email list and recieve special offers

T-Man Performance offers high performance cams, heads, cylinders, kits and dyno tuning.

All machine work is done in-house on a five axis machine center.


Custom M8 Head Breathers

Oil Pan Vent Kit