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The Problem Solvers Handlebar Clamp Shim allows you to fit almost any handlebars in almost any stem. It's machined of light and durable aluminum and grooved on the inside to hold tightly.

Notched binder bolts for frames with integrated seat collars. Details: CroMoly steel bolts Three lengths available: 16, 19 and 21mm 8mm diameter

Available in the most common sizes and thicknesses-in small or bulk quantities, Problem Solvers headset spacers help riders get their stack height just right. - Made from Aluminum, anodized or polished finish, without logos - S.H.I.S. Stem Clamp Diameter: 25.4mm

The Problem Solvers Braze-On Front Derailleur Adapter simply clamps onto your frame's seat tube and provides a secure place to bolt on your braze-on front derailleur (sold separately). This fine adapter is made of light, durable aluminum and includes a stainless-steel bolt.

The Problem Solvers Backstop bolts onto the frame to provide two stops for your cable housing. It's made of light, durable CNC-machined aluminum with a stainless-steel bolt, and the stops are slotted for easy cable installation/removal.

The Problem Solvers Single Chainring Bolts include 5 chainring bolts and nuts that are 6mm wide. This is the right size for most single-chainring setups. These chainring bolts are made of either aluminum, stainless steel, or chromoly.

The Problem Solvers Chain Tensioner is a handy device that lets you cleanly install a derailleur on frames without a derailleur hanger. It's made of light and durable CNC-machined 6061 aluminum with steel hardware. It's designed for use with rear-facing horizontal dropouts and 10mm rear axles.