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Rocker Arms, Shaft Mounted (Champion), GX390, GX420, & 460cc , 1.1 to 1

These are the famous "Champion" HD Shaft Rockers! They are arguably the best bang for your buck when it comes to valve train stability.

A Shaft-Rocker eliminates the need for a guide plate and prevents the rocker arms from walking side-side. Furthermore, they have considerably more ridgidity than stud rockers so they rarely need adjustment once set.

1.1:1 Ratio

Studs & Nuts Included


Our Price: $24.99
Rocker Arms, Reinforced - GX240 to GX390, Pair

Welded and reinforced for use with HD springs. 1.1 ration

Our Price: $39.99
Rocker Arms, Roller Tip, Billet Steel, GX270, GX390, & 13/15 Chinese OHV, Pair

Rocker Arms, Roller tip

NR Racing Rockers machined from chrome moly steel

  • Hardened roller tips and shafts
  • Dyno tested to 10,000 rpm and proven to make more horsepower
  • Uses stock shaft & Pivot Nut
  • 1.2 or 1.3 ratio

Warning: Dual spings may cause excessive shaft stretching or breakage.

Fits under stock valve cover.

These Rocker Arms require shorter Pushrods, typically 5.62 for GX270s and 6.44 for GX390s

Price is per one set (pair).


Our Price: $103.99
Rocker Arms, Roller, Shaft Mounted, Billet Steel, GX390

Rocker Arms, GX390, Shaft Mounted Roller.
New design from NR Racing. Super Strong.

1.2 Ratio or 1.3 Ratio

REVISED DESIGN SUMMER 2017

Firs GX340/390s & non-Hemi 13/15hp clones. Will not fit 240/270s.

Our Price: $129.99
Rocker Arms, Roller, GX390, Gage, 1.2 ratio

Rocker Arms, GX390, Roller 1.2 , Aluminum. New Gage Design.  GX340/390s (will not fit 240/270s)

Note: Picture is for reference only!!

Our Price: $189.99
Rocker Arms, Roller, GX390, Gage, 1.3 ratio

Rocker Arms, GX390, Roller 1.3 , Aluminum.

New Gage Design. GX340/390s (will not fit 240/270s)

Note: Picture is for reference only!!

Our Price: $189.99
Rocker Arms, Roller, GX390, Black Venom, 1.2 ratio

Black Venom Series w/Needle Bearings

Rocker Arms, Full Roller Rockers, Aluminum. 1.3 ratio

GAGE Motorsports Chinese OHV/Honda Ratio Roller Rockers

CNC machined from aircraft grade aluminum

  • Needle Bearings
  • Hardened roller tips and shafts
  • Dyno tested to 10,500 rpm and proven to make more horsepower
  • These as tested show 3% increase in maximum torque and HP over standard aluminum rockers.
Fits GX340, GX390, non Hemis 420s, & 460s. Will not fit GX240/270s

Our Price: $219.99
Rocker Arms, Roller, GX390, Black Venom, 1.3 ratio

Black Venom Series w/Needle Bearings

Rocker Arms, Full Roller Rockers, Aluminum. 1.3 ratio

GAGE Motorsports Chinese OHV/Honda Ratio Roller Rockers

CNC machined from aircraft grade aluminum

  • Needle Bearings
  • Hardened roller tips and shafts
  • Dyno tested to 10,500 rpm and proven to make more horsepower
  • These as tested show 3% increase in maximum torque and HP over standard aluminum rockers.
Fits GX340, GX390, non Hemis 420s, & 460s. Will not fit GX240/270s

Our Price: $219.99