Features:
*Direct replacement & upgrade for Kyosho Optima Mid series, Ultima, Ultima JJ, Optima, Turbo Optima, Javelin & other Kyosho buggy
*Direct replacement & upgrade for Tamiya BB-01 BBX & other Tamiya buggy
*For Yokomo YZ-870C / Team Associated YZ-10 (Higher shock towers will be needed.)
*3 different color combinations available
*Big bore shock set with 12mm pistons
*Gold color or hard coated black color aluminum shock bodies
*Polished inner shock body for slick & friction free performance
*CNC machined 12mm pistons, made of self-lubricating material
*Ti-Nitride coating shock shafts for long life and smooth action
*Aluminum shock caps allow the utmost durability and consistency
*Aluminum shock collars & bottom caps with knurled portion for increased grip
*Aluminum shock spring retainers/cups provide a solid foundation for the shock springs
*Optional springs and pistons available for fine tuning
*Experience the benefits of better bump handling, more traction and consistent performance
*Similar to the Tamiya Big Bore option shocks 54504 & 54505, but with better performance and value
*These shocks are the same as KOS04351-1 & KOS04410, but with one more color.

*Made In Taiwan

*Cars, parts, accessories & others are not included.*

Specification:
5mm hole on the top of shock cap
Shock ball ends designed for 5.8mm balls
Stroke: Front 24mm / Rear 28.8mm
Overall length: Front 84.2mm / Rear 99mm

Compatibility:
Kyosho Optima Mid Series, Ultima & Ultima JJ, Optima, Turbo Optima, Javelin & similar size cars
Tamiya BB-01, TT-02, TT-02BR, TD4, DB02, DB01, DF-03, DF-02, DN-01, TRF503, TRF502X, TRF211XM, TRF211XMW, TRF201
Yokomo YZ-870C / Team Associated YZ-10

For more information, please check the manual below.
For Kyosho cars
For Tamiya cars
For Yokomo cars

Parts List:
KOS04801-34  34mm Front Alum Shock Body Hard Coated Black for 12mm Shock (2)
KOS04801-34GD  34mm Front Alum Shock Body Gold for 12mm Shock (2)
KOS04801-41  41mm Rear Alum Shock Body Hard Coated Black for 12mm Shock (2)
KOS04801-41GD  41mm Rear Alum Shock Body Gold for 12mm Shock (2)
KOS04803  Alum Shock Cap for 12mm Shock Black (2)
KOS04805BK  Black Long 12.2mm Alum Shock Spring Retainer/Cup for 12mm Shock (2)
KOS04805GD  Long 12.2mm Alum Shock Spring Retainer/Cup for 12mm Shock Gold (2)
KOS04805TA  Long 12.2mm Alum Shock Spring Retainer/Cup for 12mm Shock Blue (2)
KOS04806  O-Ring 12x1mm for Shock Cap 12mm Shock (4)
KOS04807  Shock Spacer & Hat bushing Set for 12mm Shock
KOS04808BK  Lower Shock Cap Black (2) 12mm & 13mm Shock AE
KOS04808GD  Lower Shock Cap Set Gold (2) 12mm & 13mm Shock
KOS04808TA  Lower Shock Cap Set Blue (2) 12mm & 13mm Shock
KOS04809  O-Ring 8x1mm for Lower Shock Cap (4) 12mm & 13mm Shock
KOS04811  O-Ring 14x1mm for Threaded Collar 12mm Shock (4)
KOS04812BK  Threaded Collar w/O-rings Black for 12mm Shock AE Tamiya (2)
KOS04812GD  Threaded Collar w/O-rings Gold for 12mm Shock (2)
KOS04812TA  Threaded Collar w/O-rings Blue for 12mm Shock (2)
KOS04821  Front Shock Shaft TiN Coated 3×41.25mm (2) 12mm & 13mm Shock
KOS04826  Rear Shock Shaft TiN Coated 3×47.75mm (2) 12mm & 13mm Shock
KOS04841-6  Shock Ball End / Eyelet (for 5.8mm ball) 13.4mm (4)
KOS04841-7  Shock Ball End / Eyelet (for 5.8mm ball) 15.9mm (4)
KOS04846BK  Black Short 9.2mm Alum Shock Spring Retainer/Cup for 12mm Shock (2)
KOS04846GD  Short 9.2mm Alum Shock Spring Retainer/Cup for 12mm Shock Gold (2)
KOS04846TA  Short 9.2mm Alum Shock Spring Retainer/Cup for 12mm Shock Blue (2)
KOS04850-8.5T  Front Shock Spring White (44mm, 1.2/8.5T, 3.4 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOS04851-9T  Rear Shock Spring Blue (61mm, 1.1/9T, 2.2 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOSBS204  2x4mm Button Head Hex Hardened Steel Screw (w/container) (8)
KOS402506-05  2.6x6x0.5mm 2.5mm Steel Washer / Shim Shiny (8)
KOS40204-05NY  2x4x0.5mm 2mm Nylon Washer / Shim White (8)
KOS02001  Low Friction X Ring (w/special o-ring grease) (for 3mm shaft) (8pcs)

Option Parts:
KOS04831-217  2×1.7mm Shock Piston, for 12mm shcok (2)

KOS04850-9T  Front Shock Spring Green (44mm, 1.2/9T, 3.1 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOS04850-8T  Front Shock Spring Grey (44mm, 1.2/8T, 3.6 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOS04850-7.5T  Front Shock Spring Blue (44mm, 1.2/7.5T, 3.9 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOS04850-7T  Front Shock Spring Yellow (44mm, 1.2/7T, 4.3 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOS04850-6.5T  Front Shock Spring Red (44mm, 1.2/6.5T, 4.6 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOS04850-6T  Front Shock Spring Orange (44mm, 1.2/6T, 5.1 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)

KOS04851-10.5T  Rear Shock Spring Green (61mm, 1.1/10.5T, 1.8 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOS04851-10T  Rear Shock Spring White (61mm, 1.1/10T, 1.9 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOS04851-9.5T  Rear Shock Spring Grey (61mm, 1.1/9.5T, 2.0 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)
KOS04851-8.5T  Rear Shock Spring Yellow (61mm, 1.1/8.5T, 2.3 lb/in, ID 16.4mm, 12/13mm Shock) AE (2)