• The tremolo arm has a similar arm holder (pushes in) just like the Edge/LoPro
• SOUND-METAL steel saddle insert, for longer life of saddle & tone benefits?
• No need to cut ball-end of strings (string passes thru the block if you want) but allen wrenches STILL REQUIRED to lock down the string to the saddle and nut (no ease of use here really - yawn)
• Nut should screw to the neck (ala many Prestige models - as opposed to bolting thru the neck like the JEM/RGs did)
• Featured on 2003 Japanese-made Ibanez guitars
• Studs are the same as the ProEdge-II and do NOT feature the set screw to fasten the post to the anchor (as per the Edge, and LoPro Edge).
• Studs are the same thread and spacing as the old Edge/LoPro (studs are interchangable), but are different than the EdgePro-II.
• Has no similarity to the new Floyd Rose "Speedloader" nor does it require special strings, like that system
• Will not retrofit an old Edge/LoPro, as routing will be required, likewise you cannot put an Edge/LoPro on a 2003 model that ships with the EdgePro. Specifically, the front part of the bridge baseplate (pickup side of the studs) and the knife edge has a different radius, the back (near fine tuners) of the Edge Pro is longer and finally the inside area for the tremolo block needs to be totally routed for the EdgePro bridge.
• Will not retrofit with the new EdgePro-II

Listed below are the only parts that interchange between the LoPro Edge and the new EdgePro trems. Everything else is new.

• Arm Socket and all the parts that go with it
• Screw for the saddle intonation to hold it in place
• Tremolo arm (and white bushings)
• Fine tuners
• Body anchors

Edge Pro Tremolo Features (Ibanez literature)

• The Edge-Pro retains the same basic system of the original Edge, including the tremolo
  arm and the knife insert for the stud.
• Lowest profile Ibanez tremolo ever.
• Upgraded version of Japanese Edge and Lo-Pro Edge
• Strings can be installed with or without ball end.
• String holder block is part of the saddle. No more blocks falling out.
• Die-cast bridge follows the shape of the fretboard for more comfortable right hand feel.
• Allows stiffer string tension for arming and superior return to pitch. Since the saddle chip is
  installed on the front part of the two piece saddle, there's always full contact between the
  saddle and the base plate, which increases sustain.
• Rounded steel saddle "chip" offers increased sustain and longer string life.
• Available on all Ibanez Prestige and Signature Models (except K7) featuring a locking trem system.
  

"Same trem arm from SAT/FAT type bridge"
"Easy string loading block" (allen wrenches still required)
"New system for clamping the strings, no need for cutting the ball ends."

• Featured on Korean-made guitars (replacing the horrendous Lo-TRS-xx)
• Similar to the EdgePro visually, except it is missing the saddle inserts and the arm holder, and is shorter in length (from stud to fine tuners)
• Heat treated plate & knife edges (whereas the TRS-xxx's have just the knife edge treated)
• Pop in tremolo arm (not screw in), minus the arm holder and white bushings (als Edge, LoPro and ProEdge. Two set screws allow you to adjust arm height (off the baseplate) and looseness (swing vs tight).
• Studs are not the same as the ProEdge and do NOT feature the set screw to fasten the post to the anchor (as per the old Edge, and LoPro Edge trems)
• Has no similarity to the new Floyd Rose "Speedloader" nor does it require special strings, like that system
• Will not retrofit an old Edge/LoPro, as routing will be required, likewise you cannot put an Edge/LoPro on a 2003 model that ships with the EdgePro or EdgePro-II.
• Will not retrofit with the new EdgePro

replacable knife edges

arm holder with adjustable height and tension

Edge Pro II Features (Ibanez literature)

• The Edge-Pro II represents a significant upgrade for the Korean-made RG's.
• Improved design replaces Lo-TRS II
• Die-cast bridge plate (like the MIJ Edge trems) with replaceable knife edge plate. The Lo-TRS and Lo-TRS II featured stamped plates)
• The basic bridge design is the same as our Japanese locking trems (Edge, LoPro, EdgePro).
• Strings can be installed with or without ball end.
• String holder block is part of the saddle—no more blocks falling out.
• Die-cast bridge follows the shape of the fretboard for more comfortable right hand feel.
• Allows stiffer string tension for arming and superior return to pitch.
• Arm has both height and tension adjustments.
• Featured on all Korean-made RG models utilizing double-locking systems.

ZR Tremolo "Zero Resistance"
"Multifunctional trem arm"
"Intonation tuning arm"
"Rotating bearing block/pivot"

• This one came out of left field ;-)
• Featured on some S-series guitars
• Features a "tremsetter" or "backstop-like" device to provide counter pressure, to allow a return to "zero" (neutral) in case of string breakage.
• Screw on tremolo arm

ZR Tremolo "Zero Resistance" Features (Ibanez literature)

• The ZR (Zero Resistance) tremolo uses roller bearings to eliminate the inherent friction of the knife edge tremolo design—the ZR actually has the "frictionless" feel of a standard tremolo. The roller bearings provide a much smoother feel and a more accurate return to pitch.
• Double-Locking Tremolo
• Roller bearings allow smoother movement without knife-edge friction.
• Die-cast bridge plate.
• Built-in intonation adjustment tool.
• Tremolo arm tension adjustment.
• Incorporates Zero Point system.
• Featured on all S Korean and Japanese models.

tension adjustment of the arm


built-in intonation tool (removable)


roller pivot


tension bar to adjust trem stiffness/resistance

Zero Point System Features (Ibanez literature)

• Backstop-like device used in conjunction with the ZR Tremolo
• Consistent return to the zero point (center point) after arm use; guitar remains in tune.
• String replacement is much quicker than a standard tremolo.
• Should a G, B, or high E string break, the guitar will stay close enough in tune to allow the player to finish the song before having to replace the string.
• Tremolo will not move during "double stopping" (a major complaint of locking trem users).
• Quick tension spring adjustments.
• Zero Point system is easily removable to allow tremolo to "float." Pulling out the reverse tension bar allows the Zero Point system to be easily removed so the the ZR bridge can function as a full floating system.
• Incorporates a new tremolo arm design that allows the player to easily adjust the height of the arm as well as the tension of the arm swing without the need for wrenches. The arm screws into the arm holder in the standard fashion, while the tension of the arm rotation torque is adjusted by tightening or loosening the thumbscrew.
• The ZR bridge includes a special on-board tool for quick and accurate intonation adjust-ments.

Thanks to Ramon Alvarez for the translations and Ramon Alvarez for the initial info

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