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JK/JKU: Flexarm & Track Bar Guide

Category:  Product Highlights

TeraFlex

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JK Wrangler | JKU Wrangler Unlimited

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Sport Flexarm Preset Control Arms | Alpine Flexarm Adjustable Control Arms

Alpine Long Flexarm Adjustable Control Arms | HD Forged Adjustable Track Bars

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Sport Flexarm Preset Control Arms2.5-3” Lift

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TeraFlex JK/JKU Sport Flexarms preset control arms provide maintenance-free and dependable performance on JK Wrangler and JKU Wrangler Unlimited models with 2.5-3” lifts. Bolts to the factory control arm mounting locations. Can be added to any existing suspension lift.

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INCLUDES: (2) front upper, (2) front lower, (2) rear upper, and (2) rear lower Sport Flexarm preset control arms.

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FEATURES & BENEFITS:

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  • Durable 1-5/8” x 0.157” (42mm x 4mm) wall DOM (Drawn Over Mandrel) tube provides maximum strength

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  • Preset Sport Flexarm control arms correct caster & pinion angle for 2.5-3” lift kits
  • Full-range of movement will not restrict articulation or flex off-road

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  • High-quality factory style bushings provide excellent noise, vibration, & harshness (NVH) damping & ride quality characteristics w/ zero maintenance
  • Premium black e-dipped coating provides superior durability & corrosion resistance

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  • TeraFlex Lifetime Warranty against defects

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SPECS:

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LIFT HEIGHT: 2.5-3”

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SPORT FLEXARMS - FRONT UPPER PRESET

SPORT FLEXARMS - FRONT LOWER PRESET

        

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

FACTORY LENGTH

18-3/4”

FACTORY LENGTH

22-5/8”

SPORT LENGTH

18-3/4”

SPORT LENGTH

22-13/16”

BOTH ENDS

7/16” (12mm) Bolt

BOTH ENDS

9/16” (14mm) Bolt

BOTH BUSHINGS

611014

BOTH BUSHINGS

611011

        

SPORT FLEXARMS - REAR UPPER PRESET

SPORT FLEXARMS - REAR LOWER PRESET

         

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

FACTORY LENGTH

17-7/16”

FACTORY LENGTH

19-3/4”

SPORT LENGTH

17-11/16”

SPORT LENGTH

19-15/16”

BOTH ENDS

9/16” (14mm) Bolt

BOTH ENDS

9/16” (14mm) Bolt

BOTH BUSHINGS

611012

BOTH BUSHINGS

611011

        

JK 2-DOOR & JKU 4-DOOR

SPORT FLEXARMS - PRESET CONTROL ARMS (2.5-3” LIFT)

Sport Flexarm Kit - 8-Arm Preset Control Arms - Complete Set

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Sport Flexarm Kit - 4-Arm Preset Control Arms - Front Lower & Rear Upper 

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Sport Flexarm Kit - Front Upper Preset Control ArmsPair

Sport Flexarm Kit - Front Lower Preset Control Arms Pair

Sport Flexarm Kit - Rear Upper Preset Control Arms Pair

Sport Flexarm Kit - Rear Lower Preset Control Arms Pair

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Alpine Flexarm Adjustable Control Arms2-4” Lift

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TeraFlex JK/JKU Alpine Flexarm adjustable control arms provide maximum adjustability, dependability, and performance while retaining factory control arm mounting locations on JK Wrangler and JKU Wrangler Unlimited models with 2-4” lifts. Can be added to any existing suspension lift.

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INCLUDES: (2) front upper, (2) front lower, (2) rear upper, and (2) rear lower Alpine Flexarm adjustable control arms.

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FEATURES & BENEFITS:

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  • Durable 1-5/8” x 0.157” (42mm x 4mm) wall DOM (Drawn Over Mandrel) tube provides maximum strength

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  • Fully adjustable Alpine Flexarm control arms optimize pinion & caster angles, & tune anti-squat geometry for proper suspension alignment 
  • Re-centers axles in the wheel well for proper suspension movement or can be used to increase wheelbase
  • Full-range of movement will not restrict articulation or flex off-road

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  • High-quality factory style bushings provide excellent noise, vibration, & harshness (NVH) damping & ride quality characteristics w/ zero maintenance
  • Zero maintenance forged threaded joints for smooth quiet flex 
  • Premium black e-dipped coating provides superior durability & corrosion resistance on tube & forged rod end housing
  • Anodized 6061-T6 aluminum clamp collar to secure rod end after length adjustment

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  • TeraFlex Lifetime Warranty against defects

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SPECS: 

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LIFT HEIGHT: 2-4”

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ALPINE FLEXARMS - FRONT UPPER ADJUSTABLE 

ALPINE FLEXARMS - FRONT LOWER ADJUSTABLE

          

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

FACTORY LENGTH

18-3/4”

FACTORY LENGTH

22-5/8”

MIN. LENGTH

18-1/2”

MIN. LENGTH

22-3/4”

MAX. LENGTH

19-3/4”

MAX. LENGTH

24”

BOTH ENDS

7/16” (12mm) Bolt

BOTH ENDS

9/16” (14mm) Bolt

THREAD

1-1/4”-12 UNF 

THREAD

1-1/4”-12     UNF 

BOTH BUSHINGS

611014

BOTH BUSHINGS

611011

       

ALPINE FLEXARMS - REAR UPPER ADJUSTABLE

ALPINE FLEXARMS - REAR LOWER ADJUSTABLE

        

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

FACTORY LENGTH

17-7/16”

FACTORY LENGTH

19-3/4”

MIN. LENGTH

17-5/8”

MIN. LENGTH

19-13/16”

MAX. LENGTH

18-7/8”

MAX. LENGTH

21-1/16”

BOTH ENDS

9/16” (14mm) Bolt

BOTH ENDS

9/16” (14mm) Bolt

THREAD

1-1/4”-12     UNF 

THREAD

1-1/4”-12 UNF 

BOTH BUSHINGS

611012

BOTH BUSHINGS

611011

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JK 2-DOOR & JKU 4-DOOR

ALPINE FLEXARMS - ADJUSTABLE CONTROL ARMS (2-4” LIFT)

Alpine Flexarm Kit - 8-Arm Adjustable Control Arms - Complete Set

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Alpine Flexarm Kit - Front Upper Adjustable Control Arms - Pair      

Alpine Flexarm - Driver Side Front Upper Adjustable Control Arm - Single  

Alpine Flexarm - Passenger Side Front Upper Adjustable Control Arm - Single

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Alpine Flexarm Kit - Front Lower Adjustable Control Arms - Pair

Alpine Flexarm - Driver Side Front Lower Adjustable Control Arm - Single

Alpine Flexarm - Passenger Side Front Lower Adjustable Control Arm - Single    

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Alpine Flexarm Kit - Rear Upper Adjustable Control Arms - Pair

Alpine Flexarm - Driver Side Rear Upper Adjustable Control Arm - Single

Alpine Flexarm - Passenger Side Rear Upper Adjustable Control Arm - Single

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Alpine Flexarm Kit - Rear Lower Adjustable Control Arms - Pair    

Alpine Flexarm - Driver Side Rear Lower Adjustable Control Arm - Single

Alpine Flexarm - Passenger Side Rear Lower Adjustable Control Arm - Single

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Alpine Long Flexarm Adjustable Control Arms3-6” Lift

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TeraFlex JK/JKU: Alpine Long Flexarm adjustable control arms & Alpine Long Flexarm Brackets provide maintenance-free performance with complete alignment adjustability for JK Wrangler and JKU Wrangler Unlimited models with 3-6” lifts. 

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These fully-adjustable JK/JKU Alpine Long Flexarm adjustable control arms optimize correct caster and pinion angles for a proper alignment as well as re-center the axles in the wheel well to maintain the factory wheelbase for proper suspension movement. Can be added to an existing suspension lift.

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These CAD-designed TeraFlexs JK/JKU: Alpine Long Flexarm Brackets have been engineered for maximum strength. By repositioning and streamlining the frame-end control arm mounting points, we were able to incorporate both upper and lower mounts in each bracket thus simplifying installation while maintaining a factory appearance. 

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INCLUDES: (2) front upper, (2) front lower, (2) rear upper, and (2) rear lower Alpine Long Flexarm adjutable control arms, (2) front and (2) rear Alpine Long Flexarm brackets, (2) rear gussets, and all necessary hardware.

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FEATURES & BENEFITS:

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  • Durable 1-5/8” x 0.157” (42mm x 4mm) wall DOM (Drawn Over Mandrel) tube provides maximum strength (upper) 
  • Durable 2” x 0.197” (50mm x 5mm) wall DOM tube provides maximum strength (lower) 

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  • Fully adjustable Alpine Long Flexarm control arms optimize pinion & caster angles, & tune anti-squat geometry for proper suspension alignment 
  • Re-centers axles in the wheel well for proper suspension movement or can be used to increase wheelbase
  • Full-range of movement will not restrict articulation or flex off-road

.        

  • High-quality factory style bushings provide excellent noise, vibration, & harshness (NVH) damping & ride quality characteristics w/ zero maintenance
  • Zero maintenance forged threaded joints for smooth quiet flex 
  • Premium black e-dipped coating provides superior durability & corrosion resistance on tube & forged rod end housing
  • Anodized 6061-T6 aluminum clamp collar to secure rod end after length adjustment

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  • TeraFlex Lifetime Warranty against defects

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SPECS:   

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LIFT HEIGHT: 3-6”

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ALPINE LONG FLEXARMS - FRONT UPPER ADJUSTABLE

ALPINE LONG FLEXARMS - FRONT LOWER ADJUSTABLE

         

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

TUBE DIAMETER & WALL

2” x 0.197” (50mm x 5mm)

FACTORY LENGTH

18-3/4”

FACTORY LENGTH

22-5/8”

MIN. LENGTH

27-3/8”

MIN. LENGTH

33-3/4”

MAX. LENGTH

28-7/8”

MAX. LENGTH

35-1/4”

AXLE END

7/16” (12mm)   Bolt 

BOTH ENDS

9/16” (14mm) Bolt

FRAME END

9/16” (14mm)   Bolt 

THREAD

1-1/4”-12 UNF 

THREAD

1-1/4”-12 UNF 

BOTH BUSHINGS

# 611011

AXLE BUSHING

611014



FRAME BUSHING

611013



         

ALPINE LONG FLEXARMS - REAR UPPER ADJUSTABLE

ALPINE LONG FLEXARMS - REAR LOWER ADJUSTABLE

        

TUBE DIAMETER & WALL

1-5/8” x 0.157” (42mm x 4mm) 

TUBE DIAMETER & WALL

2” x 0.197” (50mm x 5mm)

FACTORY LENGTH

17-7/16”

FACTORY LENGTH

19-3/4”

MIN. LENGTH

20”

MIN. LENGTH

35-3/4”

MAX. LENGTH

21-1/2”

MAX. LENGTH

37-1/4”

BOTH ENDS

9/16” (14mm) Bolt

BOTH ENDS

9/16” (14mm) Bolt

THREAD

1-1/4”-12 UNF 

THREAD

1-1/4”-12 UNF 

BOTH BUSHINGS

611012

BOTH BUSHINGS

611011

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JK 2-DOOR & JKU 4-DOOR

ALPINE LONG FLEXARMS - ADJUSTABLE CONTROL ARMS (3-6” LIFT)

Alpine Long Flexarm Kit - 8-Arm Adjustable Control Arms & Long Flexarm Brackets - Complete Set

Alpine Long Flexarm Kit - 8-Arm Adjustable Control Arms - Arms Only

Alpine Long Flexarm Bracket Kit - Brackets Only 

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Alpine Long Flexarm Kit - Front Upper Adjustable Control Arms - Pair 

Alpine Long Flexarm - Driver Front Upper Adjustable Control Arms  - Single   

Alpine Long Flexarm - Passenger Front Upper Adjustable Control Arm - Side

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Alpine Long Flexarm Kit - Front Lower Adjustable Control Arms Pair

Alpine Long Flexarm - Driver Front Lower Adjustable Control Arms Single

Alpine Long Flexarm - Passenger Front Lower Adjustable Control ArmsSingle

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Alpine Long Flexarm Kit - Rear Upper Adjustable Control Arms - Pair

Alpine Long Flexarm - Driver Rear Upper Adjustable Control Arm - Single

Alpine Long Flexarm - Passenger Rear Upper Adjustable Control Arm - Single

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Alpine Long Flexarm Kit - Rear Lower Adjustable Control Arms - Pair

Alpine Long Flexarm - Driver Rear Upper Adjustable Control Arm - Single

Alpine Long Flexarm - Passenger Rear Upper Adjustable Control Arm - Single    

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Lower [Long] Flexarm Skid Plate Kits

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Weld-on TeraFlex JK/JKU Lower Flexarm Skid Plate Kits strengthen the lower control arm assembly against bending while protecting the arms from damage. The CNC cut brackets are constructed from 1/4” thick steel. Fits Sport, Alpine, and Alpine Long flexarm control arms.

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JK 2-DOOR & JKU 4-DOOR

LOWER FLEXARM SKID PLATE KIT

Front Lower Flexarm Skid Plate Kit

Rear Lower Flexarm Skid Plate Kit

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[Long] Flexarm Cam Bolt Washer Kit

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Are you tired of your control arms always coming out of adjustment? Stop the constant axle misalignment with TeraFlex JK/JKU Flexarm Cam Bolt Washer Kit.

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These Flexarm Cam Bolt Washers lock the cam bolt into position to eliminate potential movement, which causes axle misalignment. Fits into the factory locations of the front lower and rear upper cam bolt adjusters. Fits Sport, Alpine, and Alpine Long flexarm control arms.

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JK 2-DOOR & JKU 4-DOOR

FLEXARM CAM BOLT WASHERS 

Flexarm Cam Bolt Washer Kit

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HD Forged Adjustable Track Bars0-6” Lift

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Our Heavy-Duty Forged Adjustable Front and Rear Track Bars are 230% stronger than the stock piece making them the strongest track bars on the market!

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FEATURES & BENEFITS:

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  • HD Forged Track Bar is 230% stronger than factory track bar 
  • Bolts onto factory track bar brackets & can be used w/ or w/out a Track Bar Relocation Bracket – no cutting or welding required 
  • High-quality, maintenance-free factory-style bushings w/ an additional rate plate for superior handling & responsive control

       

HD Forged Adjustable Front Track Bar

       

The front axle experiences tremendous amounts of lateral force while turning and those effects increase exponentially during off-road driving. The TeraFlex JK/JKU Heavy-Duty Forged Adjustable Front Track Bar is engineered to withstand these abusive side loads and eliminates any front-end shimmy or handling issues. It also allows lateral adjustment of the axle for proper axle alignment as well as cycling through full suspension travel without interfering with other components.

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HD Forged Adjustable Rear Track Bar

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The TeraFlex JK/JKU Heavy-Duty Forged Adjustable Rear Track Bar is engineered to keep the rear axle correctly centered under the vehicle as the suspension cycles through its full range of movement. It also maximizes rear passenger spring clearance without interfering with other components.

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JK 2-DOOR & JKU 4-DOOR

HD FORGED ADJUSTABLE TRACK BARS (0-6” LIFT)

Adjustable Front Track Bar

Adjustable Rear Track Bar

Replacement Track Bar Bushing (Front or Rear)

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Front Track Bar Bracket Gusset

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The TeraFlex JK/JKU Front Track Bar Bracket Gusset beefs up the Front Track Bar Axle Bracket to prevent ‘egging out’ of the track bar hole, which can quickly loosen causing critical suspension points to bend during high-speed driving.

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JK 2-DOOR & JKU 4-DOOR

FRONT TRACK BAR BRACKET GUSSET

Front Track Bar Bracket Gusset - Single

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Rear Track Bar Frame Bracket Kit - 2.5” Performance Spacer Lift 

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The TeraFlex JK/JKU 2.5” Performance Spacer Lift Rear Track Bar Frame Bracket Kit restores the track bar to its natural position without binding or interference with other components on JK Wrangler and JKU Wrangler Unlimited models with a 2.5” Performance Spacer Lift Kit. Bolts to upper track bar frame mounting points – no welding required. 

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JK 2-DOOR & JKU 4-DOOR

REAR TRACK BAR FRAME BRACKET KIT 

2.5” Performance Spacer Lift Rear Track Bar Frame Bracket Kit

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Rear Track Bar Axle Bracket Kits

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These TeraFlex JK/JKU Rear Track Bar Axle Bracket Kits correct vehicle roll center, restore factory handling, and reduce body roll in lifted JK Wrangler and JKU Wrangler Unlimited models.

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Two lift height ranges are available. Multiple mounting locations allows neutral lateral alignment of the rear axle on JK/JKU models with 2.5” lifts or 3-6” lifts. Bolt-on bracket mounts to the rear axle. Welding is recommended but not required.

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JK 2-DOOR & JKU 4-DOOR

REAR TRACK BAR AXLE BRACKET KITS 

2.5” Lift Rear Track Bar Axle Bracket Kit

3-6” Lift Rear Track Bar Axle Bracket Kit

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Check out all of our TeraFlex Suspensions Lifts, Off-Road Performance Parts, and Jeep Accessories HERE!

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- Jason Udy 

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