Jims Roller Rocker Arms
Produced from aerospace quality 4340 chromoly steel. These roller rocker arms are heat treated using Jim’s special technique to that provides a lighter and stronger rocker arm. Features full oiling of the roller tip, valve springs and pushrod tip.
TEC # Fits: Twin Cams, Big Twins ‘84+, XL ‘86+, Buell ‘87+ & S & S motors Jims #
89420 1045RR
Roller rockers  ratio 1.625
 
89421 Fits: Twin Cams, Big Twins ‘84+, XL ‘86+, Buell ‘87+ & S & S motors 1731
Roller rockers ratio  1.745
* Bolt in roller rockers that may require modification of the heads and rocker boxes.
 
89422 For Big-Twin ‘66-84, aftermarket and S & S motors 1732
Shovelhead 1.50 ratio
 
Jims Roller Rockers & Shafts
TEC # Fits: Twin Cams, Big Twins ‘84+, XL ‘86+, Buell ‘87+ & S & S motors Jims #

89374 17611-83
Std O.D. .554”
 
89414 Fits: Same as above but for Race applications 17611-83H
Grease hole at 1 end
Grease hole fitting thread is 1/4”-20 Designed for bikes using a dry top end
 
89422 For Big-Twin ‘66-84, 17611-66B
 Shovelhead Std O.D. .937” on big end, smaller end is .434”
 
89392 For Sportster 1957-85 17435-57B
Ironhead XL Std O.D. .937” on big end, smaller end is .434”
 
Jims Rocker Arm Bushing
TEC # Early rocker arm bushing. (no Mill slot)
 Fits: Twin Cams, Big Twins ‘84+, XL ‘86+, Buell ‘87+ & S & S motors *Set of 8, I.D. is .557” intended for hone
Jims #

Pictures to Come

 

89372 17428-83K
 
89375 Early rocker arm bushing. (w/ Mill slot)
*Set of 8, Ream to fit
*Use on Big-T ‘66-84 & XL ‘57-85
17428-57K
 
89423 Rocker arm bushings for custom applications.
*Set of 8, Ream to fit, O.D. is .790”
*Works in Crane rocker arms with I.D. .785”
17428-CCK