Accessories

- Adjustable height from 9" to 78" (23cm-198cm) - Integrated work tray and PRS-33TT Tool Tray Included - Integrated accessory bar to hang wheels, air hoses, etc - Electric motor to smoothly lift up to 120 lbs (54kg) - Oversized gussets to mount stand directly to the floor - 100-3D Micro Adjust Clamp - Two #470 Oversized Machine Thread Hooks - Full height with base and accessory bar: 94" (239 cm); not using accessory bar reduces height by 2-3/4" - Base plate 135-33 (900988-01) is not included

- Adjustable height from 9" to 78" (23cm-198cm) - Integrated work tray and PRS-33TT Tool Tray Included - Integrated accessory bar to hang wheels, air hoses, etc - Electric motor to smoothly lift up to 120 lbs (54kg) - Oversized guessets to mount stand directly to the floor - 100-3D Micro Adjust Clamp - Two #470 Oversized Machine Thread Hooks - Full height with base and accessory bar: 94" (239 cm); not using accessory bar reduces height by 2-3/4" - Base plate 135-33 (900988-01) is not included

The BRK-1 is our ultimate mobile mechanic tool kit. This tailored selection of 100 professional-grade bike tools was carefully chosen by our team of experienced mechanics, with a comprehensive offering of the tools you'll need to adjust, replace, diagnose, and repair most components on a bicycle. Whether you're working in a professional race pit, neutral support tent at a local event, or the trailhead parking lot, you'll have the tools you need — and none of the tools you don't. The BRK-1 was designed around our BX-3 Rolling Big Blue Box, a professional-grade toolbox for the professional bike mechanic. When open, the BX-3 is a neatly-organized display of your tool collection, featuring dual-sided pallets with hundreds of custom-designed loops and pockets. The BX-3 has room to grow your tool collection even when fully loaded with the contents of the BRK-1. When closed, the BX-3 is built for travel, with a tough weather-resistant outer shell, integrated wheels and an extendable handle. - BX-3 Dimensions: 23.4"" x 17.3"" x 9.3"" (59.5 cm x 44 cm x 23.5 cm) - Weight: 48.5 lbs (22 kg) NOTE: Tool kit contents are subject to change.

A professional level tool set designed and built for portability. The EK-3 is perfect for team and event mechanics or the home mechanic who wants the ultimate portable tool kit. Neatly organized in Park Tool's world-famous BX-2.2 Blue Box Tool Case, this tool kit features 56 of their best tools to do hundreds of repair and maintenance tasks. Plus, the bomb-proof Blue Box features pockets, pouches, straps and open space to add more tools and parts! Kit Includes: - ATD-1.2 Adjustable Torque Driver - AWS-1 Three-Way Hex Wrench Set: 4, 5, 6mm - BBT-9 Bottom Bracket Tool for 16-Notch External Bearing Cups - BBT-32 Bottom Bracket Tool for 20 Notch Shimano and ISIS Drive - BO-2 Bottle Opener - CC-4 Chain Checker - CN-10 Professional Cable and Housing Cutter - CNW-2 Chainring Nut Wrench - CP-1.2 Cassette Pliers - CT-3.3 Chain Tool - CWP-7 Compact Universal Crank Puller - DCW-1 Double-Ended Cone Wrench: 13/14mm (2) - DCW-2 Double-Ended Cone Wrench: 15/16mm (2) - DCW-3 Double-Ended Cone Wrench: 17/18mm - DSD-2 Derailleur Screwdriver: Cross Tip - DSD-4 Derailleur Screwdriver: Flat Blade - DT-2 Rotor Truing Fork - FR-5.2H Cassette Lockring Tool with Handle - GSC-1 GearClean Brush - HCW-15 36mm/32mm Headset Wrench - HMR-8 Shop Hammer - HT-8 8mm Hex Tool - HXS-1.2 Hex Wrench Set - LP-7 Utility Pliers - MLP-1.2 Master Link Pliers - MW-8 Metric Wrench: 8mm - MW-9 Metric Wrench: 9mm - MW-10 Metric Wrench: 10mm - PAW-12 12" Adjustable Wrench - PW-4 Professional Pedal Wrench - RR-12 Tape Measure - SW-0 Precision Spoke Wrench: .127" - SW-2 Precision Spoke Wrench: .136" - SZR-1 Shop Scissors - TL-6.2 Steel Core Tire Levers - TWS-1 Torx Compatible Wrench Set

The PK-5 includes over 90 of our best shop tools selected with versatility in mind. A great way to outfit a pro bench or to set up a dream home workshop. The PK-5 is an impressive, professional set of specialty tools that can help you perform hundreds of bicycle repair and maintenance procedures. An investment you'll use and appreciate for decades. Kit Includes: - ATD-1.2 Adjustable Torque Driver - AWS-1 Three-Way Hex Wrench Set: 4, 5, 6mm - AWS-3 Three-Way Hex Wrench Set: 2, 2.5, 3mm - BBT-10.2 Adjusting Cap Tool: For 8-Spline Hollowtech II - BBT-22 Bottom Bracket Tool - BBT-69.2 Bottom Bracket Tool - BO-2 Bottle Opener - CBW-1 Open End Wrench: 8/10mm - CBW-4 Open End Wrench: 9/11mm - CC-4 Chain Checker - CN-10 Professional Cable and Housing Cutter - CNW-2 Chainring Nut Wrench - CP-1.2 Cassette Pliers - CT-3.3 Chain Tool - CWP-7 Compact Universal Crank Puller - DAG-2.2 Derailleur Hanger Alignment Gauge - DH-1 Dummy Hub - DP-2 Threaded Dummy Pedal - DSD-2 Derailleur Screwdriver: Cross Tip - DSD-4 Derailleur Screwdriver: Flat Blade - DT-2 Rotor Truing Fork - FR-5.2H Cassette Lockring Tool with Handle - GSC-1 GearClean Brush - HMR-8 8 oz. Shop Hammer - HXS-1.2 Hex Wrench Set - MLP-1.2 Master Link Pliers - NP-6 Needle Nose Pliers - PAW-6 6" Adjustable Wrench - PH-1.2 P-Handle Hex Wrench Set - PW-4 Professional Pedal Wrench - RR-12 Tape Measure - SBC-1 Spoke, Bearing and Cotter Gauge - SBS-1.2 Socket and Bit Set - SCW-13 13mm Shop Cone Wrench - SCW-14 14mm Shop Cone Wrench - SCW-15 15mm Shop Cone Wrench - SCW-16 16mm Shop Cone Wrench - SCW-17 17mm Shop Cone Wrench - SCW-18 18mm Shop Cone Wrench - SCW-19 19mm Shop Cone Wrench - SP-7 Side Cutter Pliers - SW-0 Precision Spoke Wrench: .127" - SW-2 Precision Spoke Wrench: .136" - SWR-8 3/8" Drive Ratchet Handle - SZR-1 Shop Scissors - TL-1.2 Tire Lever Set - TL-4.2 Tire Lever Set - TL-6.2 Steel Core Tire Levers - TWS-1 Torx Compatible Wrench Set - UP-SET Utility Pick Set - VC-1 Valve Core Tool - ZP-5 5" Flush Cut Pliers

The standard of the bike industry for over 40 years, the PRS-2.3 clamps two bikes and rotates horizontally 360 degrees, allowing one bike to be swung out of the way to work on another. Stand height and clamp position are firmly secured in place using our proven lock block system. Built from heavy-gauge oversized steel tubing, then chrome plated and powder coated for years of carefree use. The PRS-2.3-1 features our 100-3C Adjustable Linkage Clamps, with a time-tested design and straightforward operation. - Maximum weight capacity: 120 lbs. (54 kg) - Clamp capacity: 0.875" to 1.625" (22–41 mm) diameter tubes - Clamp jaws are nominally 4" (100 mm) wide - Clamp height: adjustable from 50" to 62" (128–158 cm) - Includes #105 Cast Aluminum Work Tray & RPP-1 Repair Stand Post Protector - Can be installed onto the #135 Repair Stand Base or bolted directly to the floor using the FP-2 Floor Plate (both sold separately)

- The PRS-2.3.1 is a professional quality double arm repair stand designed and built to withstand the rigors of everyday shop use. - Includes two 100-3D Micro Adjust Clamps (clamps tubes up to 3", fully adjustable clamping pressure, narrow 2.7" clamping jaws) - Clamps two bikes simultaneously - Clamps rotate 360 degrees horizontally and vertically - Heavy gauge, chrome plated steel tubing for rigidity and years of trouble free use - Clamping height easily adjusts from 50" to 62" (128cm to 158cm) using heavy duty lock block and locking pin system - Includes aluminum work tray - #135 Steel Base Plate sold separately - Use FP-2 Floor Mounting Plate to mount stand directly to floor (sold separately)

In certain disciplines, the single-ring drivetrain reigns supreme. Championing simplicity, strength and durability, the SRAM RED 1 AXS power meter meets the demands of triathletes, time trialists and cyclocross racers. The power meter features improved aerodynamics thanks to direct mount aero chainrings with fully integrated power, and the tighter gearing range is perfect for racing and flatter terrains. - Single-ring drivetrain simplifies functionality - 48 and 50t variants have fully integrated power into a direct mount aero chainring - 36-46t variants have spider-based power - Chainrings can be easily changed without requiring recalibration of the power meter - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control - Laser-etched chainring finish is more durable - DUB bottom bracket adds durability and simplicity - Non-aero chainrings can be installed with a single tool, making gearing changes a breeze

- 150lb holding capacity - Includes work tray (#105) (900119-01) - Base not included (900706)

Built to withstand the rigors of every day shop use, the PRS-3.3 is the stand of choice for professional mechanics around the world. Stand height and clamp position are firmly secured in place using our proven lock block system. Built from heavy-gauge oversized steel tubing, then chrome plated and powder coated for years of carefree use. The PRS-3.3-2 features our 100-3D Micro-Adjust Clamp with narrow clamping jaws and a dual-stage, cam-actuated system that quickly adjusts to accommodate nearly any seat tube or frame size. - Maximum weight capacity: 120 lbs. (54 kg) - Clamp capacity: 0.875" to 3" (22–76 mm) diameter tubes, including aero tubes - Clamp jaws are nominally 2.75" (70 mm) wide - Clamp height: adjustable from 50" to 62" (128–158 cm) - Includes #105 Cast Aluminum Work Tray & RPP-1 Repair Stand Post Protector - Can be installed onto the #130 Repair Stand Base or bolted directly to the floor using the FP-2 Floor Plate (both sold separately)

Proper frame preparation is very important. Park Tool's Head Tube Reaming and Facing Set (33.8mm reamer) combines reaming and facing of the head tube to create a perfect fit for most sizes of head cups. The HTR-1B comes with a reamer of 33.9mm for the 1-1/8 inch headset standard. Includes: • 33.9mm reamer (part #754.2), and four different size pilots (29.8mm, 30.0mm, 33.8mm, and 36.8mm) • 690 Facer • Quick-release, quick-adjust feature: bottom portion slides off and on easily without threading SHIS terminology: The HTR-1B as stock will face frames of EC29, EC30, EC34 and EC37. It will ream frames of EC34. Accessories will allow service in other standards.

The PrepStand eUP Pro is ideal for working on e-Bikes and other heavyweight bikes. Additional Reinforced Support Unit adds stability while a bike is mounted. The foot pedal operated, built-in pressurized cartridge provides an additional 17kg (37lb) of lifting power making easy work of raising and lowering most bikes weighing up to 35kg (77lb). A 360º rotatable clamp head with non-marring jaws quickly and securely holds your bike stable for repairs, cleaning and general maintenance. Quick release legs conveniently fold to a compact size for travel and storage. - Holds bike up to 77 lbs - 6061-T6 tubes keep the stand light at 30.8 lbs - 114 x 112 x 92 cm / 44.9” x 44.1” x 29.9”(Open), 112 x 24 x 21 cm / 44.1” x 9.4” x 8.3” (Folded) - Pressurized N2 cartridge can last for at least: 2 years or usage of 30,000 cycles - Built-in 4” wheel for easy transport when folded

The DT-5.2 is engineered and built to accurately face front or rear disc brake mounts so they are precisely aligned to the rotor. - Faces any IS Mount, Post Mount, or new Shimano Flat Mount, including low clearance, chainstay mounts - Telescoping axle adaptors allow use with any configuration of open or thru-axle dropouts and dropout widths (including Boost 110, Boost 148 and all fat bike axles) - Includes two facing cutters: IS Mounts Post and Flat Mounts - Includes storage case

115 pound (52kg) base plate with floor levelers for the PRS-33 Power Lift Shop Stand

Norco's Gen 3 VLT Electric Mountain Bikes all use the same batteries, made from future-proof 21700 lithium-ion cells for maximum energy density to let you choose your capacity. The 900Wh provides 66% more range than the 540Wh and weighs in at 4570 grams. The highest capacity E-MTB battery available, this 900Wh monster obliterates range anxiety, and is perfect if you're looking for longer, faster adventures. VLT batteries are sold separately. When purchasing a Norco VLT bike, make sure you have added the bike and your choice of battery to your shopping cart before you check out. Bike orders cannot be fulfilled without a battery.

It looks like it’s from the future, but it’s here now. Our lightest, stiffest, and most accurate integrated power meter and chainring combo is now on Force. Quarq D-Zero technology is accurate to +/-1.5% and isn’t affected by temperature changes, and the consistent 13-tooth gap on the rings ensures fast and reliable shifting. Not just unbeatable on performance, our integrated rings are also incredibly long-lasting. And let’s not be modest: the combination of these rings on our iridescent carbon crank arm is the best looking thing out there. FEATURES - X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear - Power meter is fully integrated into the chainring set for lighter weight - Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride - Measures right and left leg power balance - Unique chainring shape results in a lighter weight, stiffer, more durable crankset - DUB bottom bracket adds durability and simplicity

The THS-1.2 is a great addition to any trailhead, park, campus, apartment building, school, bike shop or anywhere else riders may need some help to get back on their bikes. This weather-proof stand features a super-stout cradle stand to get both wheels off the ground, making any adjustment easier. includes six carefully-chosen tools capable of helping with a wide variety of minor repairs and adjustments, securely mounted on vinyl-coated 1/8" galvanized cable. All-steel construction, plated then powder coated to withstand the elements, with tamper-proof assembly fasteners for added security. Can be bolted directly to an existing post, permanent structure, or to the THP-1 Post (available separately). - Dimensions of tool box: 12.2" x 8.7" x 2.6" (31 x 22 x 6.6 cm) - Tubes extend 17" (43 cm) from mounting surface Includes weatherproofed versions of the following tools: - AWS-11 Folding Hex Wrench Set - SD-2 Screwdriver — #2 Phillips - SD-6 Screwdriver — 6 mm Flat Blade - PW-5 Pedal Wrench - TL-5 Tire Lever Set - TWS-2 Folding Torx-Compatible Wrench Set

Updated to fit an even wider range of hub, wheel and tire combinations with room to spare, utilizing a wider base structure and larger calipers. More accurate and easier to calibrate, the versatile TS-4.2 is solidly built to accurately self-center nearly any diameter wheel 16-inch to 29+ and any tire width up to 5-inches+. - Both uprights move simultaneously to always keep wheel centered in the stand - Accommodates tire widths up to 5-inches+ with or without brake rotor mounted - Speed knob to quickly change axle widths - Accommodates hub widths from 75mm to over 250mm - Precise operation and adjustability - Built in thru-axle adaptors - Machined, welded, assembled and calibrated in our factory in St. Paul, MN - Chrome plated and powder coated heavy gauge steel construction - Removable, replaceable nylon caliper tips to protect painted/anodized rims

Park Tool's Repair Stand Base is a steel base plate for the PRS-2 OSLB, PRS-2 OS-1, PRS-2 OS-2 Repair Stands (each sold separately). - 23" x 35" x 7/16" steel plate - Approximately 118 lbs - Black painted

Updated with a smoother, more solid rotation system! Originally designed for professional Pro Tour mechanics. The PRS-22.2 firmly holds any bike without clamping the frame or seat post by supporting the bottom bracket then locking either the front or rear dropouts. Works with any style axle system, including quick release and all sizes of thru-axles without cumbersome adaptors. Ideal for cleaning and general repair work, the PRS-22.2 features a solid tripod base and folds compactly for storage or transport. - Precisely constructed of anodized 6063 T6 lightweight aluminum and durable composites (12.5lbs, 5.67kg) - Adjustable BB height of 30" to 45" / 76cm to 114cm - 360 degree horizontal rotation allows easy access to all sides of the bike - Customizable bottom bracket supports accommodate a wide variety of BB shells - Main beam is adjustable fore and aft to customize balance points - Adjustable collar features receivers for optional accessories (sold separately) 106 Work Tray and PHT-1 Paper Towel Holder - Easily transported in the BAG-20 (sold separately)

The Bosch PowerPack 500 is the same size as the PowerPack 400 and only slightly heavier, but offers a longer range. When using the Bosch Standard Charger, this lithium-ion battery requires about two hours to charge to 50% and approximately 4.5 hours to charge fully. Once fully charged and together with the Performance Line Cruise, the eBike can ride up to 56 miles. The PowerPack 500 comes as a frame or rack model for all eBike product lines.

The PRS-26 incorporates proven features from our other Team Issue stands to produce a strong, lightweight repair stand that's at home on-the-go or in the race pits. The sturdy tripod leg design folds and unfolds quickly and easily, and provides stability on any surface. The clamp is height-adjustable from 97 to 147 cm (38" to 58"), and can be positioned over one leg or between two legs to accommodate any bike. Precisely constructed from anodized 6063 T6 lightweight aluminum and durable composites, the PRS-26 is our lightest full-featured repair stand, and folds compactly for storage or transport. The PRS-26 is equipped with the time-tested 100-25D Micro-Adjust Clamp, the same design featured on our shop repair stands. The 100-25D features narrow clamping jaws to fit into tight areas or on short seat posts, and clamps nearly any tube from 23 to 76 mm (7/8" to 3"), including aero tubes and dropper posts. The cam-actuated adjustment system allows for quick entry, adjustment and exit. - Maximum weight capacity*: 36 kg (80 lbs.) - Clamp capacity: round and aero tubes from 22 to 76 mm (7/8" to 3") wide - Jaw width: 70 mm (2.75") - Height adjustable from 97 to 147 cm (38" to 58") - Base when open forms a triangle of 126 x 126 x 126 cm (49.6" x 49.6" x 49.6") - Weight: 5.7 kg (12.6 lbs.) - The PRS-26 uses the 100-25D Micro-Adjust Clamp - Replaceable jaw covers (part #1960) *NOTE: The maximum weight capacity of the PRS-26 assumes the bike's center of gravity is positioned directly below the clamp.

Norco's Gen 3 VLT Electric Mountain Bikes all share the same batteries, made from future-proof 21700 lithium-ion cells for maximum energy density to let you choose your capacity. The 720Wh provides 33% more range than the 540Wh and weighs in at just 3880 grams. The mid-weight battery strikes a balance between battery capacity and weight if you're considering a longer, faster ride but aren't 100% committed to an all-out remote backwoods excursion. VLT batteries are sold separately. When purchasing a Norco VLT bike, make sure you have added the bike and your choice of battery to your shopping cart before you check out. Bike orders cannot be fulfilled without a battery.

FOR IN-STORE REDEMPTION ONLY A convenient digital gift card can be sent to an email address of your choice, or we can ship a physical card to the intended recipient for an extra charge of $5. To get a digital card, please select "Digital" as the type and enter the email address you'd like it sent to in the "Comments" section during checkout. To get a physical card, just select "Physical" as the type and enter the appropriate address in the "Ship To" field during checkout. Finding the perfect gift can be tough, which is exactly why we offer gift cards. They make great presents for relatives and friends and are a fantastic way to thank someone special. Gift cards are for in-store redemption only.

The PRS-4.2 is a professional quality bench mount repair stand designed and built to withstand the rigors of everyday shop use. Includes three mounting holes, making it possible to clamp as high as 16.25" (41cm) from the bench surface. - Shop quality 100-3C Clamp quickly adjusts to fit any frame tube up to 1-5/8" (41mm) - The clamp jaws are nominally 4 inches (10cm) wide - Clamping height can be raised from 6.5" to 16.25" (92cm to 41cm) above the bench surface - Clamp rotates 360 degrees - Heavy gauge steel tubing - Chrome plated for durability

We put together this set of carefully chosen tools to do basic maintenance and cleaning as well as perform a wide variety of repairs and adjustments on just about any bicycle. A perfect way to start or add to your collection of shop-quality bicycle tools. The AK-5 includes a tough toolbox to protect your investment. Kit Includes: - AWS-1 3-Way Hex Wrench - BBB-4 Big Blue Book of Bicycle Repair - CC-4 Chain Checker - CM-5.3 Cyclone Chain Scrubber - CN-10 Professional Cable and Housing Cutter - CNW-2 Chainring Nut Wrench - CT-3.3 Chain Tool - DCW-1 Double-Ended Cone Wrench: 13/14mm - DCW-2 Double-Ended Cone Wrench: 15/16mm - DCW-3 Double-Ended Cone Wrench: 17/18mm - DH-1 Dummy Hub - DT-2 Rotor Truing Fork - FR-5.2 Cassette Lockring Tool - GSC-1 GearClean Brush - HCW-16.3 Chain Whip/Pedal Wrench - HXS-1.2 Professional L-Shaped Hex Wrench Set - MLP-1.2 Master Link Pliers - PAW-12 12" Adjustable Wrench - RR-12 Tape Measure - SD-2 #2 Phillips Screwdriver - SD-3 3mm Flat Blade Screwdriver - SW-0 Precision Spoke Wrench: .127" - SW-2 Precision Spoke Wrench: .136" - TL-1.2 Tire Lever Set - TWS-3 Torx Compatible 3-Way Wrench - VC-1 Valve Core Tool

The PRS-4.2 is a professional quality bench mount repair stand designed and built to withstand the rigors of everyday shop use. Includes three mounting holes, making it possible to clamp as high as 16.25" (41cm) from the bench surface. - The 100-3D Micro-Adjust clamp grips nearly any tube from 7/8" to 3" (23mm to 76mm), including aero tubes - The clamp jaws are nominally 2.75 inches (7cm) wide - Clamping height can be raised from 6.5" to 16.25" (16cm to 41cm) above the bench surface - Clamp rotates 360 degrees - Heavy gauge steel tubing - Chrome plated for durability

The SHX-1 Slide Hammer Extractor is a professional solution specifically designed for removing press fit cartridge bearings from bicycle components. Utilizing expanding collets, an extendable shaft, and a substantial (960g) slide hammer, the SHX-1 securely yet forcefully drives out cartridge bearings with targeted impact. The SHX-1 is compatible with cartridge bearings with inner diameters from 6 to 32 millimeters, covering most press fit applications found on bicycles including hubs, suspension linkages, and bottom brackets. - Set of 5 expanding collets covers most bicycle bearing IDs from 6mm to 32mm - Slide hammer shaft is extendable from 6.5" (165mm) to 13" (233mm) for additional force when needed - Organized in a convenient storage case

The XX Eagle T-Type AXS™ Wide left crankarm with Power Meter spindle utilizes SRAM's World stage proven XX crank arm with a subtly integrated power meter to record and deliver live, accurate power readings to your head unit. We achieve this by utilizing what SRAM calls “DUB-PWR” – a unique design that elegantly houses Quarq’s reliable and accurate power measurement inside the DUB crank spindle itself. Measuring left-side power to calculate total watts, it’s subtle, lightweight, compatible with any chainring setup, and boasts unbeatable battery life. It is also compatible with the Flight Attendant system, allowing for total connectivity between all AXS™ enabled components. No-compromise, no-fuss data delivery giving you an edge over the competition. - Innovative "DUB-PWR" design allows for lightweight, subtle Quarq power integration - Compatible with RockShox Flight Attendant - +/-3% accuracy means you'll always know your true watts output - Long battery life provides 400+ hours of usage - Waterproof (IPX7 waterproof to 1 meter for 30 minutes - Right arm, Bottom bracket, Chainring and Spider NOT included

It’s the ultimate in integrated power measurement. The Force AXS power meter kit adds Quarq technology to our one-piece chainrings for the lightest, stiffest, and most accurate power package available. A 13-tooth delta on all chainring pairs ensures precise shifting for any setup, as well as a less dramatic change in cadence during front shifts. Combined with our most durable chainrings ever, it’s an unbeatable combination. FEATURES - X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear - Power meter is fully integrated into the chainring set for lighter weight - Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride - Measures right and left leg power balance - Crisp and accurate front shifts - Unique chainring shape results in a lighter weight, stiffer, more durable unit