By using a large diameter drive gear, moving the pinion gear closer to the center of the drive gear to provide 20% more power, and by supporting the pinion gear with two A-RB ball bearings, X-Ship provides a smooth, effortless retrieve, and also virtually eliminates the pinion gear twist and rotor flex common with most spinning reels when fighting a fish.
- Magnumlite CI4 Rotor (1000-4000 sizes)
Shimano's new Magnumlite Rotor is made out of new CI4 material which is lighter and stronger than 1st generation CI4. It provides effortless handle rotation by reducing the weight dramatically.
- Aluminum Sideplate
- Rapid Fire Drag
Shimano’s new Rapid Fire Drag allows Anglers to quickly adjust Drag to ideal setting during the fight.
- New ''Reel Stand''
- Paladin Gear Durability Enhancement
Using a special cold forged aluminum drive gear and a hardened brass pinion gear (Stainless Steel pinion gear on Stella SW), reels equipped with the Paladin Gear Durability Enhancement will retain their out-of-the-box smoothness much longer than before. In fact, testing has shown that this combination of metals is more durable than an all-stainless steel drivetrain while maintaining the smoothness that Shimano is famous for.
- Propulsion Line Management System
The most obvious component of the Propulsion Line Management System is the new Propulsion spool lip design. Through tens of thousands of casting tests and computer simulations it has been determined that this new spool lip design provides longer casting distances than a standard spool lip design while preventing backlashes and wind knots from forming. It also allows the line to flow off of the spool in smaller loops during the cast which means less slap on the stripper guide. This means longer casts with less friction. The Propulsion spool also utilizes a long stroke design to further enhance the casting distance. Furthermore, there is less bouncing of the line on the spool lip like on a standard spinning spool. Because of the unique shape of the Propulsion spool, the line flows consistently off of the spool. So, with a standard spool, friction alternates from heavy to light as the line slaps the spool lip. This causes backlash and inconsistent line speeds. The Propulsion spool lip provides consistently light friction to overcome these situations.
- Aero Wrap II Oscillation
Aero Wrap II is a worm gear oscillation system with a specially designed pitch to create optimal oscillation speeds for the Propulsion Spool Lip design. It provides uniform line lay and winding shape to prevent loss of energy during the cast while providing longer casts than other oscillation systems. So, casting distance increases with less effort required.
- SR-3D Gear
This oversized drive gear was designed with three-dimensional analysis. This allows the surface of each tooth to be contoured exactly to the tooth shape of the pinion gear. The result is more tooth surface of the drive gear is in contact with the tooth surface of the pinion gear. Smoothness, torque, efficiency and durability are all increased.
- SR Handle
This handle screws directly into the drive gear, resulting in zero play between the handle and gear. The 1000 size handle is a very thin solid shank, while the larger sizes use a hollow handle shank, that reduces weight while maintaining extremely strong and durable properties.
- SR One-Piece Bail Wire
This one-piece bail wire has no gap for line to snag on during normal operation. Made of stainless steel, it reduces friction and allows the line to get onto the line roller quicker.
- SR-3D Gear
- S A-RB Ball Bearings
These bearings have been through the same process as Shimano's A-RB bearings, but feature shields on both sides of the bearings that reduce the possibility of salt or sand inhibiting the bearing's rotation.
- Aluminum Spool
This high precision rotor is compact and lightweight. Designed with 3-D surface modeling software, the S-Rotor ensures a comfortable retrieve.
These guards are designed to prevent impact damage to the frame and rotor. Certain guards, depending on location, also feature weep holes to prevent water accumulation within the reel.
- S-Arm Cam
Line slack around the line roller is the main cause of line trouble during casting and retrieving. The S-Arm Cam has a protruding lower surface on the bail arm that helps prevent slack that would lead to line cuts or tangles.
- New Machined Aluminum Handle
- Direct Drive Mechanism (Thread-In attachment)
The drive gear is directly attached to the handle, which means power is transmitted more efficiently with less vibration while increasing durability.
- EVA Handle Knob
- WP Drag (Waterproof Drag)
With the use of rubber gaskets, the drag is protected against intrusion of the elements, such as water or sand.
- Maintenance Port
The maintenance port is an easily accessed hole strategically located for easy maintenance of the reel. Using a slot-head screwdriver, the rubber sealed plug can be removed from the reel. One drop of lightweight oil or grease can be applied to the drivetrain to prevent corrosion and to protect the smooth retrieve of the reel. Be sure to not over-lubricate the reel as excessive lubrication can cause the reel to become sluggish.
- Fluidrive II
Building upon the successes of Fluidrive, which provides extremely tight tolerances and control in the cutting process, Fluidrive II polishes the gear surface to maximize tooth contact. This increases the efficiency of the retrieve for more power with less effort.
- Floating Shaft
With this feature, using a bearing or bushing, friction is reduced between the pinion gear and spool shaft for increased smoothness and durability.
This feature eliminates wobble during the retrieve by counter balancing the rotor to enhance sensitivity and smoothness. By using computer balancing, an approach similar to car tire balancing, Shimano is able to redistribute the rotor weight to create smooth rotation and eliminate vibrations caused by the reel.
- Super Stopper II
Super Stopper II anti-reverse uses a one-way bearing that eliminates backplay. This provides the angler with instant hooksetting power. In some reels, the Super Stopper II can be turned off to allow backreeling for special techniques and situations.
- Repairable Clicker
- Approved for use in Saltwater
- Rated for use with Mono, Fluorocarbon and PowerPro lines
Shimano SA2500FG Sustain FG Spinning Reel