Tools

Tools: the right one turns a fight into a five-minute job

The tools in this category do the specific mechanical work a general socket set can't. A rod bolt stretch gauge lets you torque main and rod fasteners to a measured stretch instead of guessing by feel. A piston ring compressor squeezes the rings flush so the pistons drop into the bore without snapping a land. Fitting and hose-end tools hold AN fittings and tube nuts without chewing the flats. These are the pieces you reach for during a rebuild or a plumbing job, where the wrong improvised tool costs you a part.

What ThreePiece stocks

There are 80 products in this category from 12 brands, with current in-stock prices running from $9 to $500 - not a promise, just what's live now. Bike Master is the deepest line here, followed by Torque Solution and Vibrant, with single-item or small runs from Mishimoto, HKS, Carrillo, DeatschWerks, TwinPower, Fluidampr, Fleece Performance, ARP and COBB.

Concrete examples across the range: the Vibrant Hose End Fitting Installation Tool Kit and the Vibrant Manual Bead Roller sit near the top; the ARP Billet Rod Bolt Stretch Gauge and Carrillo Rod Bolt Stretch Gauge cover measured-stretch assembly; the HKS Tone Fitting Wrench and the BikeMaster Piston Ring Compressor Set round out the plumbing and rebuild side.

How to choose

Match the tool to the job, not to the price. If you're building a bottom end, the choice is between a stretch gauge and a torque wrench workflow - the gauge (ARP or Carrillo) removes the friction variable, which matters on high-clamp fasteners. For assembly, a ring compressor set like the BikeMaster covers a range of bore sizes; note its stated minimums before ordering. On the plumbing side, the Vibrant kit is the do-everything option, while a single fitting wrench like the HKS handles one specific job for far less. Spend where a mistake is expensive and improvise where it isn't.

What else you need with it

Tools rarely ship alone. If you're using a ring compressor you're likely also ordering Pistons, and a stretch gauge pairs with a bearing job - see Bearings. Rebuilds pull in Head Gaskets and Gasket Kits. If the fitting tools brought you here, look at Fittings and Adapters in the same section. Everything lives under Engine Components.

Fitment and ordering

Most tools here are universal, but 3 products carry specific fitment data, sampling Subaru (EJ, STi) and GM (2500, 3500) applications across 2002-2021; product names also reference Honda, Acura, Ducati, BMW and Toyota builds. If you need to confirm a tool suits your engine, call fitment help at 813-535-5801 or reach us through Contact Us. Orders get free shipping, and Affirm and Katapult financing is available on the higher-priced kits.

Tools: the right one turns a fight into a five-minute job

The tools in this category do the specific mechanical work a general socket set can't. A rod bolt stretch gauge lets you torque main and rod fasteners to a measured stretch instead of guessing by feel. A piston ring compressor squeezes the rings flush so the pistons drop into the bore without snapping a land. Fitting and hose-end tools hold AN fittings and tube nuts without chewing the flats. These are the pieces you reach for during a rebuild or a plumbing job, where the wrong improvised tool costs you a part.

What ThreePiece stocks

There are 80 products in this category from 12 brands, with current in-stock prices running from $9 to $500 - not a promise, just what's live now. Bike Master is the deepest line here, followed by Torque Solution and Vibrant, with single-item or small runs from Mishimoto, HKS, Carrillo, DeatschWerks, TwinPower, Fluidampr, Fleece Performance, ARP and COBB.

Concrete examples across the range: the Vibrant Hose End Fitting Installation Tool Kit and the Vibrant Manual Bead Roller sit near the top; the ARP Billet Rod Bolt Stretch Gauge and Carrillo Rod Bolt Stretch Gauge cover measured-stretch assembly; the HKS Tone Fitting Wrench and the BikeMaster Piston Ring Compressor Set round out the plumbing and rebuild side.

How to choose

Match the tool to the job, not to the price. If you're building a bottom end, the choice is between a stretch gauge and a torque wrench workflow - the gauge (ARP or Carrillo) removes the friction variable, which matters on high-clamp fasteners. For assembly, a ring compressor set like the BikeMaster covers a range of bore sizes; note its stated minimums before ordering. On the plumbing side, the Vibrant kit is the do-everything option, while a single fitting wrench like the HKS handles one specific job for far less. Spend where a mistake is expensive and improvise where it isn't.

What else you need with it

Tools rarely ship alone. If you're using a ring compressor you're likely also ordering Pistons, and a stretch gauge pairs with a bearing job - see Bearings. Rebuilds pull in Head Gaskets and Gasket Kits. If the fitting tools brought you here, look at Fittings and Adapters in the same section. Everything lives under Engine Components.

Fitment and ordering

Most tools here are universal, but 3 products carry specific fitment data, sampling Subaru (EJ, STi) and GM (2500, 3500) applications across 2002-2021; product names also reference Honda, Acura, Ducati, BMW and Toyota builds. If you need to confirm a tool suits your engine, call fitment help at 813-535-5801 or reach us through Contact Us. Orders get free shipping, and Affirm and Katapult financing is available on the higher-priced kits.