- Big Bore Spring on Small Bore Shock -


2012.10.07


Big Bore Springs and Big Bore shocks are available on the market for some time now but with track conditon where high frequency quick response is requested, like outdoor astroturf, grass tracks or tight small bumps tracks, you will go back small bore shocks. Hence this feature can be considered as part of the car' setup.

The following list gives the reference for the most commun small bore shock available:
Team Associated:
  • 7474 - FT V2 0.89 (Front) Threaded Shocks for B4/.1 & B44/.1/.2

  • 7476 - FT V2 1.02 (Front) Threaded Shocks for T4/.1, SC10 & GT2

  • 7478 - FT V2 1.18 (Rear) Threaded Shocks for B4/.1, B44/.1/.2

  • 7480 - FT V2 1.32 (Rear) Threaded Shocks for GT2

  • 7482 - FT V2 1.39 (Rear) Threaded Shocks for T4/.1 & SC10


    Team Durango:
  • TD230010 - 1/10 Electric Shock Absorber Set Standard Bore Front for DEX210, DEX410/R/V3/RV3

  • TD230011 - 1/10 Electric Shock Absorber Set Standard Bore Rear for DEX210, DEX410/R/V3/RV3


    Kyosho:
  • KYOW5194V - Kyosho Front Velvet Coated Triple Cap Threaded Shock Set for Lazer ZX5SP & Lazer ZX5FS/FS2/FS2SP

  • KYOW5195V - Kyosho Rear Velvet Coated Triple Cap Threaded Shock Set for Lazer ZX5SP & Lazer ZX5FS/FS2/FS2SP

  • KYOW5196V - Kyosho 38mm Velvet Coated Triple Cap Shock Set for Ultima RB5/SP/SP2/SP2WC & for Ultima RB6

  • KYOW5198V - Kyosho 46mm Velvet Coated Triple Cap Shock Set for Ultima RB5/SP/SP2/SP2WC & for Ultima RB6


    Team Losi Racing:
  • LOSA5054 - Losi Threaded Shock Body Set 0.6" with LOSA5060 - Ti-Nitride Shock Shaft 0.6" for Triple X-CR (Front), Triple X4 (Front)
  • LOSA5055 - Losi Threaded Shock Body Set 0.9" with LOSA5064 - Ti-Nitride Shock Shaft 1.0" for Triple X-CR (Rear), Triple X4 (Rear), Triple XT (Front)
  • LOSA5056 - Losi Threaded Shock Body Set 1.2" with LOSA5062 - Ti-Nitride Shock Shaft 1.2" for Triple XT/XT-MF2/XT-CR (Rear), Triple X-SCT

    To get a set of four shocks, add:
    - LOSA5049 (x1, Aluminum Shock Adjuster Nuts)
    - LOSA5043 (x1, 4x Pistons #60 (Natural))
    - LOSA5045 (x1, 4x Pistons #57 (Black))
    - LOSA5046 (x1, 4x Pistons #56 (Red))
    - LOSA5047 (x1, 4x Pistons #55 (Orange))
    - LOSA5048 (x1, 4x Pistons #54 (Blue))
    - LOSA5015 (x4, Double O-Ring Shock Cartridge, contains seals)
    Eyelets and suspension ball comes with 12mm Losi cups

    Schumacher:
  • U4152 - Small Bore Shocks; Front Off Road - Fully Assembled
  • U4153 - Small Bore Shocks; Rear Off Road - Fully Assembled

  • U2999 - Race Shock Seal Rebuild Pack
  • U3317 - Race Shock Body; Front
  • U3318 - Race Shock Body; Rear
  • U3321 - Race Shock Rod; Front
  • U3322 - Race Shock Rod; Rear
  • U4125 - Small Bore Taper Piston 1.2mm (White)
  • U4126 - Small Bore Taper Piston 1.3mm (Black)
  • U4127 - Small Bore Taper Piston 1.4mm (Red)
  • U4149 - Small Bore Adjuster-Big Bore Springs
  • U4150 - Small Bore Shock Seal Hsg
  • U4151 - Small Bore Shock Top Cap
  • U613 - Spring Stop and Spacer Mouldings

    Tamiya:
  • 54028 - TRF Buggy Dampers for TRF201, TRF502X, TRF501X, TRF511

  • 42198 - Buggy HL Aeration Damper Set for TRF201, TRF502X, TRF501X, TRF511


    Yokomo:
  • BM-1S - Aluminum Front Shock Set for B-Max2 & B-Max4/B-Max4 WE/B-Max4II/B-Max4IIWN

  • BM-1L - Aluminum Rear Shock Set for B-Max2 & B-Max4/B-Max4 WE/B-Max4II/B-Max4IIWN


    • Team Associated, Avid RC, Team Durango, Kyosho, Team Losi Racing, Schumacher and Yokomo offer big bore springs set, all except Schumacher are 12mm diameter.

    For all the shocks mentionned above and potentially others brands not (yet) listed, aside Big Bore springs of your choice, you need a set of spring retainers & cups:

    12mm spring retainers
  • Avid RC AV1014 (B4.1 12mm Spring Collar Adapters) - Fit Team Associated shocks

  • Traxxas 3768 - Fit all shock bodies

    • 12mm spring cups
  • Team Associated 91310 (12mm Shock Spring Cups)

  • Avid RC AV1012 (Avert Design Aluminum Spring Cups)

  • Team Durango 390026 (Spring Retainer, Battery Holder Distance Bushing & Shim Set)

  • Kyosho W5303-05 (Big Bore Shock Plastic Parts Set)

  • Team Losi Racing 5095 (Shock End Set w/ Spring Cups, 12mm Shock)

  • Schumacher U4119 (Small Bore Adjuster-Big Bore Springs )

  • Traxxas 3768 (Spring Retainers (Upper & Lower))

  • Yokomo B2-S9 (Plastic spring cup)

  • Yokomo BM-S312 (Aluminum spring cup)



    • Once your shocks set with big bores springs, set the dampers on the car and verify springs arn't touching shock towers. If this is the case, you will have to shim your damper on both ends or remove some material from the shock tower.

    Below are comments from Paul Sinclair about the use of big bore spring with small bore shocks

    Source: