SKU: 827X063SWL
CP Wire Lock 21mm Wrist Pin for Honda S2000 Subaru WRX Nissan SR20DET 2000-2009
CP Wire Locks secure 21mm wrist pins in performance pistons for Honda S2000 Subaru Impreza WRX STI Nissan 240SX SR20DET Acura Integra Type R and Mitsubishi Eclipse GSX engines. These locks provide firm pin retention during high-rpm boosted operation with zero axial play for reliable power. Built from durable spring steel they handle drag racing and endurance demands.
Key Features
- 21mm Diameter Precision: Exact fit for CP pistons eliminates slop and supports revs over 9000 rpm
- High-Strength Wire Construction: Spring steel material resists fatigue in boosted and naturally aspirated builds
- Pack of 8 Locks: Enough for one 4-cylinder engine with two locks per piston
- Easy Installation: Snap into piston grooves using standard circlip pliers for quick assembly
- Racing Proven Design: Used in drag NHRA and endurance racing for dependable pin retention
Product Notes
- Inspect pistons for matching 21mm grooves before install
- Store in dry area to maintain spring tension
- Small lightweight package ships via USPS First Class or UPS Ground
Installation Notes
- Professional installation recommended.
- Use quality circlip pliers to avoid bending wire locks
- Compatible with CP forged pistons verify groove depth matches 0.827 inch pins
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000-2009 | Honda | S2000 | Base AP1 AP2 F20C F22C |
| 2002-2007 | Subaru | Impreza | WRX STI EJ205 EJ257 |
| 1989-1998 | Nissan | 240SX Silvia | SR20DET S13 S14 |
| 1990-1999 | Mitsubishi | Eclipse Galant | GSX 4G63T DOHC |
| 1994-2002 | Acura | Integra | Type R B18C |
Why Choose CP Pistons?
- Decades of experience supplying Pro Stock and Top Fuel teams
- Forged 2618 alloy pistons paired with matching components
- CNC-machined tolerances hold up under 50 psi boost
Frequently Asked Questions
- Q: Will these fit non-CP pistons with 21mm wrist pins?
A: Yes they work with any piston groove spec’d for 21mm diameter pins as long as groove width matches standard wire lock profile - Q: What material are the wire locks made from?
A: Hardened spring steel for maximum retention strength and reuse in multiple rebuilds - Q: Do they come with warranty?
A: Covered under CP Pistons limited lifetime warranty against manufacturing defects when used in approved applications
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Compact poly bag in 4x3x1 inch box
- Weight: 0.1 lbs
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