SRAM X9 1x 10 Drivetrain Bundle: This X9 1x 10 package has been put together to offer everything you need to upgrade your drivetrain to benefit from the simplicity & reliability of a single narrow/wide chainring & added security of clutch style rear derailleur. This bundle comes with a Race Face Narrow/ Wide chainring, KMC chain, SLX cassette, X9 Type 2 rear derailleur & X9 Type 2 10-Speed Rear Derailleur. The Race Face chainring has a narrow/wide tooth pattern to retain your chain without the need for a chaindevice when paired with X9 Type 2 clutch style rear derailleur that has been designed to deliver maximum drivetrain stability-even through the most punishing technical terrain. With Roller Bearing Clutch technology, SRAM TYPE 2 eliminates derailleur bounce & chain slap without sacrificing precision. The SLX 10 Speed Cassette sprockets have computer designed tooth configuration with contoured shift gate that result in a crisp smooth shift even under load & the 11-36 close ratio gearing allows a more efficient use of energy through finer cadence control. This is all controlled with a X0 10 speed right hand shift with a 1:1 actuation ratio (shifter cable travel: derailleur movement) this helps to simplify/stabilize the uneasy act of balancing rear derailleur hanger design, tight cog spacing & exact cable tension resulting in the easiest index shifting system to set up & it stays that way. Race Face Single Narrow/ Wide Chainring Narrow Wide tooth profiling ensures ultimate chain retention Stiff 4mm plate thickness & I-beam construction transfer loads without flexing 7075-T6 aluminum, aerospace grade strength Reversible laser etched graphics KMC X10-93 10 Speed Chain Enhanced Durability: With unique SP (Strech Proof) treatment, the durability has been effectively enhanced by reducing the attrition between inner plates & pin. As a result, chain life has been significantly prolonged. Pin Power: The unique KMC " Bulls-Eye" pin mushrooming technique, which provides 200kgf of average pin power for unsurpassed side plate retention. Noiseless: Special "Z" bridge side plate configuration & chamfering provide excellent shifting performance & minimize noise even with a mix of different derailleur components. Nimble Shifting: The "Z" bridge side plate configuration means faster, smoother, quieter & more precise shifting. Light Weight: Shorter pin length & use of higher grade materials are combined to reduce weight. Tensile Strength: Safety, performance & peace of mind are assured, with minimum of 1020kgf above ISO standard XSP Treatment: Special proprietary XSP treatment is applied to both high alloy pins & plates to reduce the friction, thus, to enhance the chain life. Lower Bridge: This lower bridge hastens the down gear shifting & yet mitigates the engaging impact between sprocket & chain. Upper Bridge: The upper bridge forms a slant vault parallel to the tip of tooth movement. This vault shape makes the tooth & the chain engage much more precise & swifter. 1/2" x 11/128" Pin length 6.2mm Silver Complete with missing link Shimano Dyna-Sys SLX 10 Speed Cassette SLX 10-Speed Dyna-Sys cassette featuring light weight minimal design sprocket carrier The 3 largest sprockets are mounted on a lightweight alloy carrier to reduce weight & increase rigidity Hyperglide sprockets have a computer designed tooth configuration resulting in a crisp smooth shift even under load Close ratio gearing allows a more efficient use of energy through finer cadence control Sprockets are cut away & drilled to reduce weight without reducing rigidity Sram X0 10 Speed Trigger Shifter Smaller design with adjustable pull lever EXACT ACTUATION for precise & dependable 10-speed performance Multi-adjustable trigger shifter which allows for precise rider fit Match Maker X compatible Zero Loss Technology Sram X9 Type 2 10-Speed Rear Derailleur Cage Lock: Just push the cage forward-creating slack & lock it in place Chain stays perfectly loose, letting the derailleur swing out of the way When youre ready to ride again, simply unlock the cage & go Roller Bearing Clutch: A one-way roller clutch controls chain tension for consistent shifting Needle bearing Self-lubricating for consistently smooth action 360 degree clutch force for reliability & durability Clutch force comes factory calibrated by SRAM Consistent shifting feel Maintenance free clutch design EXACT ACTUATION 1:1 ratio for precise & dependable 10-speed performance