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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.

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 Up-Cup is a nice aluminum cup to replace a damaged or broken plastic non-drive side bottom bracket cup in a Shimano UN54 square-taper bottom bracket.

Problem Solvers' Abnormal 46 PressFit 30 Adapter allows you to combine normally incompatible cranks and frames. The A46 modifies 46mm BB shells (the standard for PressFit 30 BB) to accept 24mm and GXP spindles. Use your old cranks with new frames! Technical Details • CR0094 accepts 24mm crank spindles (Hollowtech II, RaceFace X-Type) • CR0095 accepts GXP-type cranks from Truvativ & SRAM • Enduro cartridge bearings and seals

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 - 1-1/8" Diameter - S.H.I.S. Stem Clamp Diameter: 28.6mm

The Problem Solvers Double Chainring Bolts include 5 chainring bolts and nuts that are 8mm wide. This is the right size for most double-chainring setups. These chainring bolts are made of either aluminum, stainless steel, or chromoly.

The Problem Solvers Head Tube Reducers resize your head tube to accommodate different size forks. These fine aluminum reducers are designed for traditional, external-cup headsets. Please contact us for any questions about compatibility with your bicycle.

The Problem Solvers Travel Agent amplifies your braking power so that you can mix road, mountain and cyclocross brakes and brake levers. Instead of buying new levers or brakes, just install a Travel Agent and you're good to go. This trick gizmo is made of quality 6061 aluminum and is available with and without a built-in adjustment barrel. It works with cantilever brakes, road dropped handlebars, and Shimano STI and Campagnolo Ergopower levers.

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 Inner Chainring Bolts include 5 of the special threaded chainring bolts that fit into the chainring nuts on your crankset to hold the chainrings in place (chainring nuts sold separately). This type is 8mm long and made of light, durable aluminum.