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Thermlock® Piston Technology:
Wilwood’s exclusive Thermlock® Pistons provide the most effective thermal barrier available for minimizing heat transfer from the brake pads to the caliper body, seals, and fluid. This innovative multi-part design incorporates a stainless steel shield and coated aluminum shell configuration that effectively retards heat transfer by 25% and more. Lower operating temperatures translate to the elimination of seal crystallization, the elimination of localized fluid boiling, and longer service life through decreased distortion in the caliper body and piston bores. This technology was originally developed for the extreme temperatures and sustained high heat realized in NASCAR's Winston Cup, Busch GN and Craftsman Truck Series brake systems. The applications now cover all the popular Wilwood calipers used for extreme duty short track and road course competition. |
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Thermlock T2 Piston
Click here to view exploded image. |
Thermlock T1 Piston
Click here to view exploded image. |
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Images not to scale. (T2 piston approx. 1.4" in length, T1 piston approx. 1.0" in length.)
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Thermlock® T2 pistons are the latest design deep cup pistons used as standard equipment in the STR, Prolite, Integra, and GTIII/ST calipers. The T2 series utilizes increased shield wall thickness and a revised thermal barrier configuration to eliminate all compressibility within the piston. The part numbers listed below can be used as current service replacements or as upgrades for older model calipers.
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Thermlock® T1 pistons are the latest intermediate length design used as standard equipment in all Superlite and GN III "ST" designated calipers. The T1 pistons feature a revised shield, shell, and thermal barrier configuration to eliminate all compressibility within the piston. The part numbers listed below can be used as current service replacements or as upgrades over stainless steel equipped or older model calipers. Shallow cup pistons for special built Dynalite and SSP series calipers are also listed below.
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T2 Part No.
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Diameter
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Length
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Caliper Applications
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200-5207
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1.88"
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1.40"
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GT III/ST, GT 6000, Integra 4, Prolite 4
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200-5143
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1.75"
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1.40"
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GT III/ST, GT 6000, Integra 4, Prolite 4
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200-7398
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1.62"
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1.40"
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STR, Integra 4 and 6, Prolite 4 and 6
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200-7402
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1.25"
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1.40"
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STR, Integra 6R, Prolite 6R
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T1 Part No.
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Diameter
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Length
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Caliper Applications
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200-7550
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1.88"
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1.05"
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Superlite, LC-GT
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200-7551
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1.75"
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1.05"
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SL, NDL, GN III, LC-GT
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200-7552
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1.75"
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0.88"
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Dynalite, SSP
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200-7553
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1.62"
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1.05"
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Superlite, NDL
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200-7554
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1.38"
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1.05"
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SL, NDL, GN III
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200-7555
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1.25"
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1.05"
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Superlite, IR-GT
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200-7556
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1.12"
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1.05"
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Superlite, IR-GT, NDL
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200-7557
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1.00"
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1.05"
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Superlite, IR-GT
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ANRA-Spring Nationals |
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